Why was Jesus delivered up to be crucified according to Acts 2?

Acts 2 says Jesus was delivered up to be crucified by the determinate counsel and foreknowledge of God. That counsel was settled in eternity past by the Godhead, not as an accident or mere human decision. God determined it to fulfill His purpose and bring everything to consummation in Christ.

Les teaches from Acts 2:22-23 that Peter, speaking to the men of Israel at Pentecost, declared Jesus of Nazareth was approved of God by miracles, wonders, and signs, and was delivered up by the determinate counsel and foreknowledge of God. Les asks when that took place and answers: way back in eternity past, perhaps billions of years ago, when the Godhead determined that earth would be created to be inhabited, man placed on it with free will to respond to His love or reject it, and that in order to bring it to a consummation He went to that. It was all the fulfillment of that predetermined counsel of the Godhead.

Acts 2:22

Ye men of Israel, hear these words; Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs, which God did by him in the midst of you, as ye yourselves also know:

When did God's determinate counsel about Christ's crucifixion take place?

God's determinate counsel concerning Christ's crucifixion took place in eternity past, before creation and human history. Scripture does not reveal exactly how far back it occurred; the context suggests it may have been billions of years ago, when the Godhead determined creation, man's free will, and redemption's consummation.