What does the Bible say about God's intervention in salvation?

The Scriptures illustrate that God's intervention is crucial for salvation. In the story of Abraham and Sarah, God intervened to allow them to conceive when it seemed impossible. Romans 4:17-21 highlights Abraham's faith despite his and Sarah's deadness in terms of procreation. This mirrors the spiritual deadness of sinners; without God's sovereign grace, there is no possibility of new life. Just as God intervened for Abraham and Sarah, He must intervene for us by illuminating our hearts to recognize our need for salvation and enabling us to respond in faith.