So then faith cometh by hearing, and hearing by the word of God. ~ Romans 10:17
Literally, So then belief comes by hearing and hearing by the utterance of God.
God speaks through Scripture and through every means mentioned in Scripture.
By whom [Jesus] also we have access by faith into this grace wherein we stand, and rejoice in hope of the glory of God. Romans 5:2
So, grace is through faith and faith gives us access to grace–and only by grace can we stand.
But by the grace of God I am what I am: and his grace which was bestowed upon me was not in vain; but I laboured more abundantly than they all: yet not I, but the grace of God which was with me. ~ 1 Corinthians 15:10
So, grace does the works of righteousness. Whatever I do on my own is filthy rags. But He can do works through me and speak through me.
Neither yield ye your members as instruments of unrighteousness unto sin: but yield yourselves unto God, as those that are alive from the dead, and your members as instruments of righteousness unto God. Romans 6:13
Our part is to yield and allow God to do righteousness through us.
Everything else is sin:
whatsoever is not of faith is sin. Romans 14:23b
Whatever God didn’t tell us to do and do through us by grace, which is through faith, is sin.