What is the Biblical basis for the belief that God foreordained the fall of Adam and Eve? I was reading the other day and I came across these verses


  But with the precious blood of Christ, as of a lamb without blemish and without spot: Who verily was foreordained before the foundation of the world, but was manifest in these last times for you, (1 Peter 1:19-20, KJV)


I came to the conclusion that if Christ was foreordained before the foundation of the world then the fall of Adam and eve, and the need for a savior, must have been planned for, expected, or even meant to happen.

What is the biblical basis that the fall was the plan all along?
The statement means God knew mankind would not be perfect and holy character, i.e. that they would sin.

God is unique in character.  (Refer to references of "the Holy One of Israel", for example: unique in character is the intended message of this name God gave Himself to Ancient Israel).

There was zero chance mankind would be of the same character.  So, God prepared a way to redeem them while remaining true to His character.

God's plan was made before He made 'the foundations of the world' (can be interpreted physical creation, or prior to making man in the physical creation.  Either interpretation is irrelevant to the fact God knew beforehand man would fall short ("sin" is 'miss the mark'), thus God prepared a way to redeem mankind first, then made mankind.

But, God does not ordain free-will beings to fall, e.g. Jas 1:13-14

"For God cannot be tempted by evil, nor does he tempt anyone.  But each person is tempted when they are dragged away by their own evil desire and enticed"