c. 246–248 · Origen, Commentary on the Gospel of Matthew 14.5
The conception that these things were said in a simple sense by Peter, as if he were inquiring whether he was to forgive his brother when he sinned against him seven times, but no longer if he sinned an eighth time, and by the Saviour, as if He thought that one should sit still and reckon up the sins of his neighbours against him in order that he might forgive seventy times and seven, but that from the seventy-eighth he should not forgive the man who wronged him, seems to me altogether silly and unworthy alike of the progress which Peter had made in the company of Jesus and of the divine magnanimity of Jesus. Perhaps, then, these things also border on an obscurity akin to the words, “Hear My voice, ye wives of Lamech,” etc. If any one has already become a friend of Jesus so as to be taught by His spirit which illumines the reason of him who has advanced so far according to his desert, he might know the true meaning, therefore, in regard to these things, and such as Jesus Himself would have clearly expounded it; but we who fall short of the greatness of the friendship of Jesus must be content if we can babble a little about the passage. The number six, then, appears to be working and toilsome, but the number seven to contain the idea of repose. And consider if you can say that he, who loves the world and works the things of the world, and does those things which are material, sins six times, and that the number seven is the end of sin in his case, so that Peter with some such thought in his mind wished to pardon seven sins of those which his brother had committed against him.