The interpretation of this is certainly not in opposition to "great is the mystery of godliness: God was manifest in the flesh"
Even as the rock, Peter saith:
but as He who called you
is holy, you also be holy in all
your conduct,
because it is written, “Be holy, for I am holy.”
And if ye call on the Father, who without respect of persons judgeth according to every man's work, pass the time of your sojourning
here in fear:
knowing that you were not redeemed with corruptible things,
like silver or gold, from your aimless conduct
received by tradition from your fathers,
but with the precious blood of Christ, as of a lamb without blemish and without spot.
And so, beloved - discernment (to tell the difference betwixt) requires knowledge,
even EVERY WORD which proceedeth from the mouth of God:
for if you have a beloved son, it is by your sharing of knowledge that he is able to discern:
behold, my beloved son: this is a fig; and this is an egg; and that is a serpent.
So we say not that salvation is hinged upon the Law of Life - but that it IS necessary, so as not to OFFEND the Father - it is necessary to KNOW what is wicked and evil, in order to AVOID it.
Adonai DID speak (yea, it is written - and so we MUST eat):
My people are
destroyed for lack of knowledge: because thou hast rejected knowledge, I will also reject thee, that thou shalt be no priest to me: seeing thou hast forgotten the law of thy God, I will also forget thy children.
Peace and love to all sincere.