Protoevangelium

Protoevangelium - A term (based on the Greek words for “first” [protos] and “gospel” [evangelion]) that refers to the first allusion to the gospel in Gen 3:15, where God promises that Eve’s offspring will prevail over the serpent’s offspring.

Genesis 3:15 CSB

I will put hostility between you and the woman,

and between your offspring and her offspring.

He will strike your head,

and you will strike his heel.

Who is involved?

I = God

you = Satan

woman = Eve

her offspring/he = ?