What is repentance? Preachers will quickly mention it without defining it. That is because they do not believe it is an actual change of the will to the point where you stop sinning. This is a very important subject since repentance is one of the two things you have to do to enter the kingdom of God according to our Lord Jesus Christ, Mark 1:15. Here is a video I made to explain from the Bible what it is.
https://www.youtube.com/watch?v=3u17t8pTJOM