generations of Jacob
37:2 generations of Jacob. This is the last time the formula, “these are the generations of...,” is used in Genesis. This verse probably represents the signature of Jacob at the conclusion of the section originally written by Jacob (beginning at Genesis 25:19b). The information in the rest of Genesis must have come originally from Joseph and the other sons of Jacob. Possibly Moses recognized this by affixing a similar formula at its conclusion, in Exodus 1:1.