Regarding the family construct, two popular verses are Exodus 20:12 and Proverbs 22:6. The concept of friendship is conveyed in the popular verses Proverbs 18:24 and Proverbs 27:6.
Exodus 20:12, the fifth of the Ten Commandments, is a command from God to honor father and mother. The command includes a blessing for long life. This commandment to respect father and mother is the only one of the Ten Commandments that includes such a blessing.
Proverbs 22:6 is a proverb for the leaders of the family unit, in which Solomon states that training a child for God's path allows the child to stay faithful even in old age. Elsewhere in Proverbs, Solomon writes in a way that shows his own high regard for friendship. "Friendship can be so deep, he says, that true friend will be closer than a brother" (Proverbs 18:24). Also, Proverbs 27:6 states that wounds from a friend are faithful, for a true friend desires the good of his friend.
Both concepts, family and friendship, are of great importance in the Bible. Though the cultures of the people of the Bible are much more communal in family and friendship than people in some modern individualized and developed cultures, the Bible's principles on both topics can still be of great benefit in the modern context.