How do we know predestination is true according to the Bible?

Predestination, as described in biblical texts, is the doctrine that God has eternally chosen certain individuals for salvation. This is well articulated in Acts 2:23 where Peter asserts that Jesus was delivered over to be crucified 'by God's set purpose and foreknowledge'. This reveals that the events surrounding Christ's death were not accidental but were part of God's sovereign plan from the beginning. Furthermore, Ephesians 1:4-5 states that believers were chosen in Christ before the foundation of the world, illustrating the concept of predestination clearly. Such teachings emphasize that our salvation rests not on human effort but on God's mercy and sovereign will.