Epistle of Barnabas 17
1
Moreover also concerning the food laws Moses received three doctrines with a spiritual significance, but they accepted them as concerns food because of the lusts of the flesh.
2
But David received knowledge concerning the same three doctrines, and saith: Blessed is the man that hath not walked in the council of the ungodly — even as the fishes go in darkness into the depths; and hath not stood in the path of sinners — even as they who pretend to fear the Lord sin like swine; and hath not sat in the seat of the pestilent — even as the birds who sit in wait for prey.