19 Therefore repent and return, so that your sins may be wiped away, in order that times of refreshing may come from the presence of the Lord; Acts 3:19 (NASB)
One form of religion that claims to be Christian but isn’t is based in something called “no Lordship” or “easy-believism.” On the other hand, many of the proponents of it will point to what we call “the Gospel” in what follows as the “damnable heresy” of Lordship salvation. I have often shared here using passages such as Acts 3:19 (above) making it clear that the Bible tells us that there is no salvation without repentance and again in Acts 2:38.
38 Peter said to them, “Repent, and each of you be baptized in the name of Jesus Christ for the forgiveness of your sins; and you will receive the gift of the Holy Spirit. Acts 2:38 (NASB)
In any case, to support the Lordship case, all we have to go is go the God’s Word. In the case of the No-Lordship case, it all comes down to philosophical argumentation.