Repentance from sin

When Jesus said to "repent and believe" what did he mean by repent? This video shows where in scripture the natural man is called to turn from sin.

Heard the good news?
https://rumble.com/vm9asu-the-gospel.html

Scriptures addressed in this video:
Jonah 3:8
Jonah 3:9
Jonah 3:10
Mark 1:14
Mark 1:15
Luke 3:8
Luke 3:9
Acts 3:26
Acts 17:29
Acts 17:30
Acts 26:17
Acts 26:18
Acts 26:19
Acts 26:20