How do we know God's sovereignty in salvation?

In Matthew 19, Jesus illustrates the impossibility of achieving salvation through human effort, stating that with man it is impossible, but with God, all things are possible. This highlights that salvation is not dependent on human works but on God's sovereign will. The doctrine of sovereign grace affirms that God actively chooses those whom He will save, demonstrating His power to bring about salvation despite human inability or rebellion. Ultimately, it is God's grace that transforms hearts and leads individuals to faith in Christ, showcasing His complete authority in the salvation process.