In 1 Corinthians 1:18-25, Paul explains how the cross of Christ sets up a completely different paradigm from worldly wisdom and activity. We may know the right thing, and we may know how to do the right thing, but God also desires sincere hearts behind our actions. Our job is not to mold our own hearts but rather to be honest with ourselves, with God, and with those around us, so that the Holy Spirit can produce sincerity of heart in every area of our lives.