How do we know God predestines people to salvation?

The doctrine of predestination is foundational to sovereign grace theology, highlighting that God has chosen certain individuals for salvation before the foundation of the world. Ephesians 1:4-5 states, '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: Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will.' This text showcases the intentionality behind God's choice, emphasizing that salvation is not based on human effort but entirely on God’s mercy and will. Throughout the Bible, we see Paul discussing this mystery, illustrating the loving choice made by God for His people, which is not reversible nor contingent upon anything within those chosen.