This is so, because what can be known about God is plain to them; for God himself has made it plain.

For he is not a Jew who is so outwardly, neither is circumcision that which is outward in flesh;

but he is a Jew who is so inwardly; and circumcision, of the heart, in spirit, not in letter; whose praise is not of men, but of God.

In no way: because if it is so, how is God able to be the judge of all the world?

Now we [all] know that everything the law says applies to those who are under [obligation to obey] that law, [Note: Here "the law" appears to refer to the Old Testament Scriptures generally, since Psalms and Isaiah are quoted. See verses 10-18]. This is so that the mouth of every objector may be stopped [i.e., from making excuses for his sin], and thereby bring the entire world under God's judgment [i.e., both Jews and Gentiles].

We know that our old man was crucified with him so that the body of sin would no longer dominate us, so that we would no longer be enslaved to sin.

But now we have been released from the law, since we have died to what held us, so that we may serve in the new way of the Spirit and not in the old letter of the law.

But you are not in the flesh but in the Spirit, if it is so that the Spirit of God dwells in you. But if any man doesn't have the Spirit of Christ, he is not his.

Then Isaiah is very bold and says,

“I have been found by those who did not seek Me;
I have shown Myself to those who did not [consciously] ask for Me.”

The rest grew callous; as Scripture says--'God has given them a deadness of mind--eyes that are not to see and ears that are not to hear--and it is so to this very day.'

So, I urge you, brothers, because God is so merciful [to us], to offer your bodies as a living sacrifice, [fully] dedicated and very pleasing to God. For this is a reasonable [or spiritual] way for you to worship [or serve] Him.

We have different gifts based on the grace that was given to us. So if your gift is prophecy, use your gift in proportion to your faith.

for one makes no difficulty of eating all sorts of food: another is so scrupulous, he lives upon herbs.

For everything that was written long ago was written to instruct us, so that we might have hope through the endurance and encouragement that the Scriptures give us.