Good day 33,
Not being under the law and repentance are two different issues. There are those who don't understand the concept of "new covenant" and they equate "not being under the law" with "freedom to sin." We are not under the law, but scripture is clear that God requires repentance.
metanoéō (from 3326 /metá, "changed after being with" and 3539 /noiéō, "think") – properly, "think differently after," "after a change of mind"; to repent (literally, "think differently afterwards").
* Repent, then, and turn to God, so that your sins may be wiped out, that times of refreshing may come from the Lord,
* Repent therefore! Otherwise, I will soon come to you and will fight against them with the sword of my mouth.
* Peter replied, "Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit.
* In the past God overlooked such ignorance, but now he commands all people everywhere to repent.