Check out Isaiah 53 and Psalm 22.
Psalm 22:
16 For dogs encompass me;
a company of evildoers encircles me;
they have pierced my hands and feet—
17 I can count all my bones—
they stare and gloat over me;
18 they divide my garments among them,
and for my clothing they cast lots.
Psalm 22:
16 For dogs encompass me;
a company of evildoers encircles me;
they have pierced my hands and feet—
17 I can count all my bones—
they stare and gloat over me;
18 they divide my garments among them,
and for my clothing they cast lots.
10 Of which salvation the prophets have enquired and searched diligently, who prophesied of the grace that should come unto you:
11 Searching what, or what manner of time the Spirit of Christ which was in them did signify, when it testified beforehand the sufferings of Christ, and the glory that should follow.
12 Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into.
The truth behind the cross of Jesus Christ was not revealed to the prophets even though they wrote about it. It was to minister to those after the cross happened. It was kept mystery form. Satan knows Scripture. Satan would not have initiated the cross to kill the seed if he knew that through the cross he would be defeated. It had to be kept hid until after it was revealed.