In the Christian religion, the dove represents the Holy Spirit and peace, says About.com. References to doves appear in both the Old Testament and the New Testament.
In Genesis 8, after the great deluge that God sent to destroy the earth, He sends a dove to Noah to signify the end of the mayhem. In this chapter, the dove carries an olive branch in its beak and signifies God's new covenant with man, according to About.com. A dove also appears in Luke 3. In this chapter, the Holy Spirit descends from heaven in the form of a dove to talk to Jesus Christ.