Ideas about the Kingdom of the Heavens around us and the unity of believers in Christ within it
When Peter preached that the people should “repent,” he explained that meant that they were to “turn away from their wickedness” and so, in their behavior, “listen” to Jesus. Jesus did not come to entertain us or to offer advice, but to turn us away from our own way to obedience to him.
After Peter preached his first sermon, on the day of Pentecost, his hearers asked “what must we do to be saved?” His answer was “repent and be baptized.” Those who believed his message repented by giving up their claims of self-ownership and self-reliance and starting to live in community with each other, sharing freely as any had need.
Jesus uses unforgiveness as the prime example of a stumbling block we can place in the way of a fellow believer, bringing judgment. Therefore he warns us that we must be careful to freely forgive those who come to us expressing repentance for harm they have done to us by missing the mark of either our own, or God’s, expectations for their behavior.
When God sent Moses to deliver his people from Egypt, the Pharaoh who ruled Egypt responded to some of the plagues with false repentance. That is, he tried to “make a deal” with God, and even admitted that he was in the wrong, only to renege on his agreements as soon as God removed the plague. With each “deal” on which he reneged, his heart became more hardened. But this is always what happens when, out of fear or remorse, we try to “make a deal” with God rather than obey him.
Like the rich man who ignored the needs of poor Lazarus in the parable, those who self-indulgently use their wealth and are indifferent to the needs of the poor need to repent. But, because they are accustomed to ignoring God, most have rendered themselves incapable of repentance–even if someone rises from the dead to warn them (as Jesus did).