This was written by an unknown author, and Diognetus himself is known only by name, no facts concerning him having come down to us. It dates from the first part of the second century. The writer speaks of “the superstition as respects the Sabbaths” which the Jews manifested, and he adds these words: “To speak falsely of God, as if he forbade us to do what is good on the Sabbath days - how is not this impious?” But there is nothing in this to which a commandment-keeper would object, or which he might not freely utter. TFTC 31.1
The “Recognitions of Clement” is a kind of philosophical and theological romance. It purports to have been written by Clement of Rome, in the time of the apostle Peter, but was actually written “somewhere in the first half of the third century.” TFTC 31.2