- Sheldon Clowdus
The go to verse in this case is Ephesians 2:8-9.
For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast.
This is a very clear and straightforward declaration of the cause of salvation. It is by grace we have been saved. It is not a result of works. I think where some people miss the mark a little here is by limiting what "works" are. We tend to think in terms of church attendance, financial giving, good deeds, etc. "Works" really can mean anything we do to try to contribute to God's grace in the process of salvation. If it comes from us, it is a "work".
Below are some other verses that teach sola gratia:
for all have sinned and fall short of the glory of God, and are justified by his grace as a gift, -- Romans 3:23-24
So too at the present time there is a remnant, chosen by grace. But if it is by grace, it is no longer on the basis of works; otherwise grace would no longer be grace. -- Romans 11:5-6
I do not nullify the grace of God, for if justification were through the law, then Christ died for no purpose. -- Galatians 2:21
In him we have redemption through his blood, the forgiveness of our trespasses, according to the riches of his grace, -- Ephesians 1:7
even when we were dead in our trespasses, made us alive together with Christ - byyou have been saved -- Ephesians 2:5
who saved us and called us to a holy calling, not because of our works but because of his own purpose and, which he gave us in Christ Jesus before the ages began, -- 2 Timothy 1:9
so that being justified by hiswe might become heirs according to the hope of eternal life. -- Titus 3:7