What does the Bible say about why some are saved and some are damned?

According to Scripture, the reason some are saved is entirely because of God's grace. Salvation is a gift from God that cannot be earned, as stated in Ephesians 2:8-9, emphasizing that grace is unmerited favor. Conversely, those who are damned do so because of their stubborn refusal to trust in Christ, as detailed in Matthew 23:37-39, illustrating that man's unbelief leads to condemnation. God permits individuals to follow their own way, which ultimately results in their separation from Him due to the absence of faith.