The First Epistle of Clement is an early Christian document that was commonly circulated in the early church before being rejected as part of the New Testament canon. There is a passage in it that addresses faith and works that sounds rather reminiscent of Martin Luther's theology 1500 years later (emphasis mine):
All these, therefore, were highly honoured, and made great, not for their own sake, or for their own works, or for the righteousness which they wrought, but through the operation of His will. And we, too, being called by His will in Christ Jesus, are not justified by ourselves, nor by our own wisdom, or understanding, or godliness, or works which we have wrought in holiness of heart; but by that faith through which, from the beginning, Almighty God has justified all men; to whom be glory for ever and ever. Amen.
It then goes on to talk about the value of works, but doesn't say that there is justification from it.
Is Martin Luther known to have read the First Epistle of Clement? And if so, did he comment on what he thought about it?