Genesis 27:29 - The blessing of God's chosen.

Let people serve thee, and nations bow down to thee: be lord over thy brethren, and let thy mother's sons bow down to thee: cursed be every one that curseth thee, and blessed be he that blesseth thee.

cursed be every one that curseth thee, and blessed be he that blesseth thee:This is the blessing that God bestowed upon Abraham, the patriarch of God's chosen family (Genesis 12:3) and it carries through to all the generations of Abraham (Numbers 24:9).