I admire your constancy, sir. It is a gift to be so wrong so often, in so many ways. Do you have your Bible handy?
Acts 7: 51 "You stiff-necked people, uncircumcised in heart and ears, you always oppose the holy Spirit; you are just like your ancestors. 52 Which of the prophets did your ancestors not persecute? They put to death those who foretold the coming of the righteous one, whose betrayers and murderers you have now become. 53 You received the law as transmitted by angels, but you did not observe it." 54 When they heard this, they were infuriated, and they ground their teeth at him.
But on to penance. The precedence is set in:
Numbers 5: 6 "Tell the Israelites: If a man (or a woman) commits a fault against his fellow man and wrongs him, thus breaking faith with the LORD, 7 he shall confess the wrong he has done, restore his ill-gotten goods in full, and in addition give one fifth of their value to the one he has wronged. 8 3 However, if the latter has no next of kin to whom restoration of the ill-gotten goods can be made, the goods to be restored shall be the LORD'S and shall fall to the priest; this is apart from the atonement ram with which the priest makes amends for the guilty man.
Leviticus 4-7 is even more explicit - with penance instructions for individual men, for priests, and for princes.
And what does the NT bring? Matthew 5: 6 23 Therefore, if you bring your gift to the altar, and there recall that your brother has anything against you, 24 leave your gift there at the altar, go first and be reconciled with your brother, and then come and offer your gift. 25 Settle with your opponent quickly while on the way to court with him. Otherwise your opponent will hand you over to the judge, and the judge will hand you over to the guard, and you will be thrown into prison. 26 Amen, I say to you, you will not be released until you have paid the last penny.
The Lord's Prayer tells us to forgive those who have transgressed against us, and Matthew 18 tells us to forgive our brother in essentially unlimited fashion. Therefore, we are instructed to do penance to our brethren whom we wronged, and to forgive others their penance towards us.
Penance due God and penance due our fellow men.
Oh, I have a Bible handy...it is the thing that continues to expose the Roman error so routinely. Your first quote is so obviously taken out of context that it serves as a prime example of the destructive hermeneutic promulgated by Rome and its ignorant ilk.
Then you teach us Jewish Law as a practice for believing Gentiles. Obviously, you did not read the rest of the story (Eph. 2:11 - 16), but that has never stopped you from spouting the bizarre theology peddled by Rome.
We could only hope that some of the Roman constituents would actually cut off and tear out some of the appendages demanded by the tenets of Jewish Law for the failures that they inevitably commit. If they did at least they would be closer to demonstrating they actually believed the tripe they try to set upon the rest of the world. Instead, like Peter was compelled to spank the Judaizers, we need to chastize you patrons of Rome, "Now therefore why do you put God to the test by placing upon the neck of the disciples a yoke which neither our fathers nor we (especially the RCs) have been able to bear? But we (the real rescued believers) believe we are saved through the grace of the Lord Jesus,..." You probably cannot find this in the Bible, since it repudiates the silly self-justification of Rome.
But, please continue with that cultish practice of penance and other empty rituals certain to be destroyed in the final judgment. It makes the free and unearned grace of Jesus Christ so beautiful in contrast to the self-righteousness mistakenly held by Rome. Those called into the light of Christ will see this contrast and flee to the safety of His righteousness and away from Vatican darkness.