The Book of Malachi draws upon various themes found in other books of the Bible. Malachi appeals to the rivalry between Jacob and Esau and of Yahweh's preference for Jacob contained in Book of Genesis 25–28. Malachi reminds his audience that, as descendants of Jacob (Israel), they have been and continue to be favoured by God as God's chosen people. In the second dispute, Malachi draws upon the Levitical Code (e.g. Leviticus 1:3) in condemning the priest for offering unacceptable sacrifices.