'Repent' in the Bible
If you warn the wicked person, and he doesn't repent of his wickedness or of his wicked behavior, he'll die in his sin, but you will have saved your own life.
"Therefore, Israel, I'm going to judge you according to the behavior of each and every one of you," declares the Lord GOD. "So repent and turn from all your sins so that sin won't keep on being a stumbling block for you.
I don't take pleasure in the death of anyone who dies," declares the LORD. "So repent, so you may live!"
"Tell them, "As certainly as I'm alive and living,' declares the Lord GOD, "I receive no pleasure in the death of the wicked. Instead, my pleasure is that the wicked repent from their behavior and live. Turn back! Turn back, all of you, from your wicked behavior! Why do you have to die, you house of Israel?'"