According to Genesis, Noah and his family disembarked from the Ark and offered a sacrifice to God in thankfulness for their great deliverance. God responded by giving them the rainbow as the sign of His promise to never again judge the earth with a similar flood. The promise came with the command to fill the earth, certainly through worldwide migration.

"But of him are ye in Christ Jesus, who of God is made unto us wisdom, and righteousness, and sanctification, and redemption." (1 Corinthians 1:30)

"For consider him that endured such contradiction of sinners against himself, lest ye be wearied and faint in your minds." (Hebrews 12:3)

"And he ordained twelve, that they should be with him, and that he might send them forth to preach." (Mark 3:14)

"Simon Peter, a servant and an apostle of Jesus Christ, to them that have obtained like precious faith with us through the righteousness of God and our Saviour Jesus Christ: Grace and peace be multiplied unto you through the knowledge of God, and of Jesus our Lord." (2 Peter 1:1-2)