Passage
And having gifts differing according to the grace that was given to us, whether prophecy, [let us prophesy] according to the proportion of our faith;
And having gifts differing according to the grace that was given to us, whether prophecy, [let us prophesy] according to the proportion of our faith;
Romans 12:4 For even as we have many members in one body, and all the members have not the same office:
Romans 12:5 so we, who are many, are one body in Christ, and severally members one of another.
Romans 12:6 And having gifts differing according to the grace that was given to us, whether prophecy, [let us prophesy] according to the proportion of our faith;
Romans 12:7 or ministry, [let us give ourselves] to our ministry; or he that teacheth, to his teaching;
Romans 12:8 or he that exhorteth, to his exhorting: he that giveth, [let him do it] with liberality; he that ruleth, with diligence; he that showeth mercy, with cheerfulness.
The verse centers on "grace", "faith", "having", "gifts", "differing", "given", "whether", and "prophecy". It is saying that salvation is received as God's gift through faith, so boasting is pushed out by the wording itself.
The nearby context moves from verse 5's "so we who are many are one..." into verse 7's "or ministry let us give ourselves to...", so "grace" and "faith" belong inside that flow. In Romans context, the local focus is righteousness by faith, union with Christ, life in the Spirit, and God's covenant faithfulness.
A plain takeaway is to answer the verse's own emphasis on "grace" and "faith" with trust shaped by these words, not by a vague optimism outside the passage.