Contradiction with Revelation 13:8
This verse suggests that the Lamb was slain from the foundation of the world, potentially conflicting with 1 Peter 1:20's notion of a foreordained plan revealed in later times.
Revelation 13:8: And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the Lamb slain from the foundation of the world.
Contradiction with Acts 2:23
This verse indicates Jesus was delivered by a determinate counsel and foreknowledge of God, conflicting with the idea of Him being foreordained purely and revealed only later for human benefit.
Acts 2:23: Him, being delivered by the determinate counsel and foreknowledge of God, ye have taken, and by wicked hands have crucified and slain:
Contradiction with John 17:24
This implies love and glory with the Father before the foundation of the world, which might seem contradictory to 1 Peter 1:20's emphasis on revelation in later times.
John 17:24: Father, I will that they also, whom thou hast given me, be with me where I am; that they may behold my glory, which thou hast given me: for thou lovedst me before the foundation of the world.
Contradiction with Ephesians 1:4
This verse indicates that believers were chosen in Him before the foundation of the world, which could contrast with 1 Peter 1:20's timeline of revelation.
Ephesians 1:4: According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love: