'Change' in the Bible

So remember the heights from which you have fallen, and repent [change your inner self—your old way of thinking, your sinful behavior—seek God’s will] and do the works you did at first [when you first knew Me]; otherwise, I will visit you and remove your lampstand (the church, its impact) from its place—unless you repent.

See, then, that you have a change of heart; or I will come to you quickly, and will make war against them with the sword of my mouth.

And I gave her time for a change of heart, but she has no mind to give up her unclean ways.

Keep in mind, then, the teaching which was given to you, and be ruled by it and have a change of heart. If then you do not keep watch, I will come like a thief, and you will have no knowledge of the hour when I will come on you.