What does the Bible teach about God's judgment on those who reject Christ?

The teachings in Isaiah 66:4 contribute to a clear biblical theme regarding God's judgment on those who reject Christ. The scripture states that those who do not heed God's call are left with their own delusions, and as a result, they will face the consequences of their choices. As 2 Thessalonians 2:11-12 elaborates, God may send a strong delusion upon those who will not believe the truth, ensuring they remain bound to their own unrighteousness. This serves as a stark warning that the rejection of Christ—by trusting in personal righteousness over divine grace—leads to eternal separation from God. It is a call for vigilance in faith and an earnest appeal to embrace the gospel's offer of grace through Jesus Christ to be spared from judgment.