Seth. substituted. Figure of speech Paronomasia. Sheth (Seth)... Sheth (appointed).
God. Elohim.
seed. son, by Figure of speech Metonymy (of Cause).
Related Commentaries of Genesis 4:25
Genesis 4:25
25 And Adam knew his wife again; and she bare a son, and called his name Seth:h For God, said she, hath appointed me another seed instead of Abel, whom Cain slew.