You can pretty much ideologically prove what you want to by citing one or two Bible verses and ignoring the rest of the Bible.
Salvation by water baptism only? Just isolate 1 Peter 3:18-22.
Salvation by belief and confession only? Romans 10:8-10 will do.
Salvation by belief only? Acts 16:31
Salvation by belief and baptism only? Mark 16:16
Salvation by loving the truth alone? 2 Thessalonians 2:10
Salvation by just hearing? Ephesians 1:13
Salvation that follows only through repentance and godly sorrow? 2 Corinthians 7:10
Savlation for women through childbearing alone? 1 Timothy 2:15, though you have to stretch the word “she” into “women” there.
Salvation only by staying with the ship? Acts 27:31
Salvation only by being an Israelite? Romans 11:26
Salvation only by being a Gentile? Acts 28:28
Salvation only by doing good things: feeding and clothing the poor, helping the sick, visiting the imprisoned? Matthew 25:34-40
Salvation only by grace through faith? Ephesians 2:8
Okay, the contexts of some of those are deliberately spurious, having nothing to do with the kind of salvation or “being saved” that we usually talk about. A few are outright silly.
My point is that we don’t always know what we’re talking about when we speak of salvation, or in what context it’s found in scripture, or how God bestows it.
Salvation isn’t a matter of “either-or,” but “and” and “and” and “and.”
Personally, my hermeneutic on salvation is seeing a lot of those scriptures describing it as becoming as much like Jesus as humanly possible.
He was human, so it is theoretically possible. He was and is divine, so it may be functionally impossible for the rest of us.
That shouldn’t keep us from trying.
Many of those scriptures above are attributes of an ongoing process called salvation which, according to Philippians 2:12-13, we work out by letting God work through us, “according to His good purpose.”
Therefore, the good works that we do are not our works, but His; He chooses to achieve them through us.
We give up doing what we want to do, and do what He wants us to do. We crucify self, and enthrone the Crucified in our hearts:
I have been crucified with Christ and I no longer live, but Christ lives in me. The life I live in the body, I live by faith in the Son of God, who loved me and gave himself for me. – Galatians 2:20
Salvation begins here and now, and continues in eternity forever.
As Christians, we choose and are chosen by God to be agents of that salvation in our own lives and in the world. We are literally God’s work in progress. He equips us for it with His own Holy Spirit.
So there is never a point, as long as we live, at which we can live a Christian life – a life of worship – without letting Him work through us. We do so in gratitude for what He has done for us, but also for what He will yet do through us.
And as long as we are His instruments of peace, there is never a point at which we have to be worried about our salvation.
It is given by God’s grace, accepted in faith, expressed through His work in us.