And WHAT might ask shall you add to the foundation of Christ, that He has already performed, that SAVED you in the first place?
To seek additional means of salvation, is to distrust Christ.
Our "salvation" is like the Jews' "salvation" from Egypt--yet, after, they sinned. so they fell under God's wrath, anyway, and they forfeited the promise God made to them.
1 Corinthians 9
26Therefore I run in such a way as not to run aimlessly; I box in such a way, as to avoid hitting air;
27but I strictly discipline my body and make it my slave, so that, after I have preached to others, I myself will not be disqualified.
1 Corinthians 10
1For I do not want you to be unaware, brothers and sisters, that our fathers were all under the cloud and they all passed through the sea;
2and they all were baptized into Moses in the cloud and in the sea;
3and they all ate the same spiritual food,
4and all drank the same spiritual drink, for they were drinking from a spiritual rock which followed them; and the rock was
[a]Christ.
5Nevertheless, with most of them God was not pleased; for their dead bodies were spread out in the wilderness.
6Now these things happened as examples for us, so that we would not crave evil things as they indeed craved them.
7Do not be idolaters, as some of them were; as it is written: “THE PEOPLE SAT DOWN TO EAT AND TO DRINK, AND ROSE UP TO PLAY.”
8Nor are we to commit sexual immorality, as some of them did, and twenty-three thousand fell in one day.
9Nor are we to put the Lord to the test, as some of them
[c]did, and were killed by the snakes.
10Nor grumble, as some of them
[d]did, and were killed by the destroyer.
11Now these things happened to them as an example, and they were written for our instruction, upon whom the ends of the ages have come.
12Therefore let the one who thinks he stands watch out that he does not fall.
13No temptation has overtaken you except something common to mankind; and God is faithful,
[e]so He will not allow you to be tempted beyond what you are able, but with the temptation will provide the way of escape also, so that you will be able to endure it.
14Therefore, my beloved, flee from idolatry.
This is what I hold.
Your "objection" was, "What can you add to the foundation?"
Well, you'd better not add sin, because you'll fall under God's wrath and forfeit the promise God made you--if you want to call that (sinning, falling under God's wrath, forfeiting eternal life) "saved", you can, but I want nothing to do with that.