The precise meaning of "faith" in Christianity may differ among the various Christian traditions, but this verse is often given as a kind of standard statement of Christian faith:
That he was raised from the death for God the Father. Most Christians believe that God is one eternal being who exists as three distinct, eternal, and indivisible persons: the Father, the Son (Jesus Christ the eternal Word), and the Holy Spirit.
Commenting on the function of faith in relation to the covenant of God, the writer of the letter to the Hebrews says, "Now faith is the assurance of things hoped for, the conviction of things not seen" (Heb 11:1 ESV). Υποστασις (hy-po'sta-sis), translated "assurance" here, commonly appears in ancient papyrus business documents, conveying the idea that a covenant is an exchange of assurances which guarantees the future transfer of possessions described in the contract. In view of this, Moulton and Milligan suggest the rendering: "Faith is the title deed of things hoped for" (Vocabulary of the Greek Testament, 1963, p. 660). The Greek word e´leg-khos, rendered "conviction" at Hebrews 11:1 (ESV), conveys the idea of bringing forth evidence that demonstrates something, particularly something contrary to what appears to be the case. Thereby this evidence makes clear what has not been discerned before and so refutes what has only appeared to be the case. This evidence for conviction is so positive or powerful that faith is said to be it. Christian faith, described in these terms, is not synonymous with credulity.
Hebrews 11:6 describes the meaning and the practical role of faith: "Without faith it is impossible to please [God], for he who comes to God must believe that He is, and that He is a rewarder of those who diligently seek Him."
Summarizing the New Testament concept of faith, it is reliance upon God's self-revelation, especially in the sense of confidence in the promises and fear of the threats that are written in Scripture. The writers evidently suppose that their concept of faith is rooted in the Hebrew Scriptures.
In addition, the New Testament writers conflate or equate faith in God with belief in Jesus Christ. The Gospel of John is particularly emphatic on this point, where Jesus is quoted, "The Father judges no one, but has given all judgment to the Son, that all may honor the Son, just as they honor the Father. Whoever does not honor the Son does not honor the Father who sent him" (John 5:22–23). When asked "What must we do to do the works God requires?" the writer has Jesus answering, "The work of God is this: to believe (pi'stis) in the one he has sent" (John 6:28–29).'
In Matthew 19:16-30 a man comes to Jesus and asks him "what good thing must I do to get eternal life" and Jesus says anyone who follows me will receive eternal life. Meaning someone who truly believes will follow Jesus and live their lives as Jesus did. These are the people who are real Christians, not fake Christians. These are the people who are born-again as the rests of John 3 talks about. These are the people who receive eternal life through believing and therefore following Christ. Note verse 27 peter says "we have left everything to follow you" and Jesus tells him in verse 28 "everyone who has left houses or brothers or sisters or father or mother[f] or children or fields for my sake will receive a hundred times as much and will inherit eternal life." Showing us that believing in christ, following him and receiving eternal life will come at great personal cost (will come at great personal cost, as following Jesus means a person will chose to make changes in there life inorder to live there life in the way he lived his), to follow Jesus means to follow Jesus example of how we are to live our lifes more and more like his.
A person must be born-again as John 3 says, this is a spiritual birth where we receive the holy spirit who becomes their guide and enables them to live a holy life a Jesus did. Holy and therefore not following their sinfull nature, but following the nature of God the, of Jesus, of the Holy spirit, the three parts of God that make him a whole being. Similar to human beings who have their brains, their bodies, and their spirits we could consider God the father as the brain part, Jesus as God in a body, and the holy spirit as the spiritual part of God the he left with each Christian, and is still the spiritual part of God, and the spiritual part of Jesus who is and always was one with god in the kingdom of heaven outside of our understand of time because God is greater than time, he is "the beginning and the end" as the Bible says, and he created time.
Matthew 19:16-30 New International Version "16 Now a man came up to Jesus and asked, "Teacher, what good thing must I do to get eternal life?"
17 "Why do you ask me about what is good?" Jesus replied. "There is only One who is good. If you want to enter life, obey the commandments."
18 "Which ones?" the man inquired.
Jesus replied, "'Do not murder, do not commit adultery, do not steal, do not give false testimony,
19 honor your father and mother,'[d] and 'love your neighbour as yourself.'[e]"
20 "All these I have kept", the young man said. "What do I still lack?"
21 Jesus answered, "If you want to be perfect, go, sell your possessions and give to the poor, and you will have treasure in heaven. Then come, follow me."
22 When the young man heard this, he went away sad, because he had great wealth.
23 Then Jesus said to his disciples, "I tell you the truth, it is hard for a rich man to enter the kingdom of heaven.
24 Again I tell you, it is easier for a camel to go through the eye of a needle than for a rich man to enter the kingdom of God."
25 When the disciples heard this, they were greatly astonished and asked, "Who then can be saved?"
26 Jesus looked at them and said, "With man this is impossible, but with God all things are possible."
27 Peter answered him, "We have left everything to follow you! What then will there be for us?"
28 Jesus said to them, "I tell you the truth, at the renewal of all things, when the Son of Man sits on his glorious throne, you who have followed me will also sit on twelve thrones, judging the twelve tribes of Israel.
29 And everyone who has left houses or brothers or sisters or father or mother or children or fields for my sake will receive a hundred times as much and will inherit eternal life.
30 But many who are first will be last, and many who are last will be first.
According to Roman Catholic theology, in an objective sense faith is the sum of truths revealed by God in Scripture and tradition and which the Church presents to us in a brief form in its creeds. Subjectively, faith stands for the habit or virtue by which these truths are assented to.
Because the virtue is "infused" and not reachable by human efforts, it is therefore one of the theological virtues.
"We believe", says the Vatican Council (III, iii), "that revelation is true, not indeed because the intrinsic truth of the mysteries is clearly seen by the natural light of reason, but because of the authority of God Who reveals them, for He can neither deceive nor be deceived." Thus, with regard to the act of faith which the Christian makes in the Holy Trinity, faith can be described in a syllogistic fashion, thus:
Roman Catholics accept the major premise as being beyond doubt, a presupposition upon which reason is based and thus intrinsically evident to reason; the minor premise is also held to be true, based on belief in the infallibility of certain Church declarations, and also because, as the Vatican Council says, "in addition to the internal assistance of His Holy Spirit, it has pleased God to give us certain external proofs of His revelation, viz. certain Divine facts, especially miracles and prophecies, for since these latter clearly manifest God's omnipotence and infinite knowledge, they afford most certain proofs of His revelation and are suited to the capacity of all." Hence Thomas Aquinas writes: "A man would not believe unless he saw the things he had to believe, either by the evidence of miracles or of something similar" (II-II:1:4, ad 1). Thomas is here speaking of the motives of credibility, the causes which give rise to belief.
Text adapted from The Catholic Encyclopedia article "Faith".
Several paragraphs later he continues with:
Protestants differ on the exact relationship between faith and knowledge, although all agree that knowledge is normally involved. Roughly, the split is between paedobaptists and baptists, with paedobaptists asserting that faith means placing one's trust in Jesus Christ according to the measure of understanding granted, and baptists asserting faith means placing one's trust in Jesus Christ with a certain minimal core of understanding being necessary.
The Calvinistic View of Faith: [Saving] Faith, itself, is a gift from God.
The Arminian View of Faith: Faith is not a Gift of God but salvation is. Hebrews 11:6 And without faith it is impossible to please God, because anyone who comes to him must believe that he exists and that he rewards those who earnestly seek him.
So to say faith is a gift would be "Without the Gift of God" it is impossible to please God and to receive this gift through seeking Him with the gift he would give you.
Salvation is the Gift.
The basis for faith is divine testimony, not the reasonableness of what God says, but the simple fact that he says it. Faith rests immediately on "Thus saith the Lord". But in order to understand this faith the veracity, sincerity, and truth of God must be owned and appreciated, together with his unchangeableness.
What is faith? It is the assurance of things hoped for, the conviction of things not seen (Heb. 11:1); that is, it is the assurance we have, of the existence, of unseen things. Joseph Smith Jr. (Lectures on Faith)
Alma 32:21 in the Book of Mormon says: 'And now as I said concerning faith— faith is not to have a perfect knowledge of things; therefore if ye have faith ye hope for things which are not seen, which are true.'