How do we know that God predestines some for eternal life?

The concept of predestination is rooted in the understanding that God, in His sovereignty, has the authority and wisdom to choose whom He will save. Jude 4 references certain men being 'ordained to this condemnation,' indicating that God not only elects those who will receive mercy but also those who will face judgment. This underscores the notion that all of humanity is deserving of condemnation due to sin, yet in His grace, God elects some for salvation, demonstrating His mercy. The clear teaching of Scripture affirms that this predestination is not individualized based on future actions but is part of God's eternal purpose. This truth should foster humility and gratitude among believers, as none have earned their place in salvation, but have been drawn by God's saving grace.