How do we know that God chooses some for salvation?

The doctrine of election is firmly grounded in scripture, particularly highlighted in passages like 2 Timothy 1:9, which states, "who has saved us and called us with a holy calling, not according to our works, but according to His own purpose and grace which was given to us in Christ Jesus before time began." God's choice to save certain individuals is not arbitrary; it is based on His sovereign purpose and grace. This truth is vital for understanding the nature of salvation, which is wholly dependent on God's initiative and mercy rather than human effort. Furthermore, the distinction between those appointed for grace and those left in their sin serves to magnify God's mercy and glory.