What does the Bible teach about the certainty of salvation?

The certainty of salvation is rooted in God's sovereign grace and is affirmed throughout Scripture. Romans 8:28-30 provides a clear picture of this: 'And we know that all things work together for good to them that love God, to them who are the called according to his purpose.' This illustrates that God is orchestrating all events toward the ultimate good of His chosen people. Furthermore, since salvation comes through the redemptive work of Christ, it is guaranteed for those for whom He died. Hebrews 7:25 states, 'Wherefore he is able also to save them to the uttermost that come unto God by him.' This encapsulates the assurance believers can have in their salvation — it's based on God’s unchanging promise, not on human effort or merit.