What does it mean that salvation is of God?

Salvation is a divine act, fully initiated and accomplished by God alone. Ephesians 2:8-9 emphasizes that we are saved by grace through faith, not by works, ensuring that no one can boast about their salvation. It underscores that God, in His sovereign grace, has chosen His people for salvation and has orchestrated every aspect of the redemptive plan through Christ. Therefore, every believer's assurance rests entirely on God's action and purpose in salvation rather than any of their own efforts or merits.