Genesis 4:7

if. The Hebrew Accent ( Pashta ) puts the emphasis on the 1st "well" and on this 2nd "if", to mark the solemn and Important alternative.

sin = sin offering. Hebrew. chata. See App-43 . The word "offering" is actually added in Exodus 30:10 . Leviticus 4:3 , Leviticus 6:25 ; Leviticus 8:2 .Psalms 40:6 . Compare 2 Corinthians 5:21 .Ephesians 5:2 .

lieth. Lieth is mase. Sin offering is feminine. So that the Hebrew reads "at the entrance [a male] is lying, a sin offering".

shall be. Supply "is" instead.

and thou shalt rule. Compare Genesis 3:16 .