What does the Bible say about the Day of Judgment?

The Day of Judgment is a pivotal moment in biblical prophecy where God's righteous judgment will be executed. Matthew 7:21-23 emphasizes that not all who profess faith will enter the kingdom of heaven; rather, it is those who do the will of the Father. This day will expose the sincerity of individuals' faith and whether they genuinely trusted in Christ for salvation. The passage warns that many will be deceived, thinking their works will save them, but it is the grace of God that truly offers salvation.