Seeing you have purified your souls in your obedience to the truth through the Spirit in sincere brotherly affection, love one another from the heart fervently:
Peter has been talking about redemption by the Christ who paid a price we could never pay. He purchased us by His blood, thus bringing about the pardon for our sins. Now he says that we have purified our souls in obeying the truth. The Bible has a very real way of bringing us down to earth. When we get carried away with some of the grand things we do, it brings us back on solid ground by telling us to purify our souls in obeying the truth. Redemption and obedience are the means of our purifying. In the twentieth century, we need to hear these truths just as much as they needed to hear it then. No system of salvation is correct that does not include obeying the truth.