Nowhere in Scripture are we commanded to pray for the forgiveness of our sins except in The Lord's Prayer you mean? When Jesus commanded 'Pray then in this way: 'Our Father, who art in Heaven, hallowed be Thy name. Thy kingdom come, thy will be done, on earth as it is in heaven. Give us this day our daily bread, AND FORGIVE US OUR DEBTS, as we forgive our debtors. Lead us not into temptation, but deliver us from evil.' Jesus explicitly teaches us to pray for the forgiveness of our sins here in Matthew 6. No 'twisting' of The Word needed here: these are the words that Christ Himself taught us to pray
And St. Paul teaches that we are to follow traditions in a number of places, a couple being: 1 Cor. 11:2, 'Now I praise you because you remember me in everything and HOLD FAST TO THE TRADITIONS, just as I have delivered them to you.' St. Paul praises the Church in Corinth for keeping the traditions he taught them. And also in 2 Thessalonians 2:15. 'So brethren, stand firm and hold fast to the TRADITIONS that you were taught, whether by word of mouth or by letter.' St. Paul writes clearly here: there ARE traditions that he taught, and not all of them were written down in his letters. Further on in 2 Thessalonians 3:6, St. Paul admonishes those who are NOT following what? The traditions he taught them.
Scripture shows that there are clearly some traditions that are not found in its pages, and we are still to follow those; we are not to follow the 'traditions of man', which both Jesus and St. Paul mention, but the traditions of God, which St. Paul felt he was teaching, by both word of mouth and by letter, are most assuredly to be kept.
Peace in Christ