Moses, one of the earliest prophets, represents God as saying: "I will put enmity between you and the woman, and between your seed and her seed; it shall bruise your head and you shalt bruise his heel." Gen. 3:15.
The serpent represents sin, the seed of the woman is Christ, and the destruction of all evil is foretold; Christ is to bruise the serpent's head, that is, destroy sin.
A wound on the head of a serpent is fatal; so the wound that Jesus has given evil will totally destroy it. -Heb. 2:14; I John 3:8.
Rev. John Lightfoot writes, "That all the prophets from Adam and upwards had their eye upon the promise in the garden and spoke of salvation and delivery by Christ by his breaking the head and destroying the kingdom of the devil."
God promised to Abraham that he would bless all mankind.
"In you shall all families of the earth be blessed." -Gen. 12:3.
Note
All nations, all families shall be blessed: not may be blessed; they shall be blessed!
The identical promise was revealed to Isaac.
"I will perform the oath which I swore unto Abraham your father, and I will make your seed to multiply as the stars of heaven, and will give unto your seed all these countries, and in your seed shall all the nations of the earth be blessed". -Gen. 26:3, 4.
All nations shall be blessed, not cursed: blessed!