[4] But God, (who is rich in mercy,) for his exceeding charity wherewith he loved us, [5] Even when we were dead in sins, hath quickened us together in Christ, (by whose grace you are saved,) [6] And hath raised us up together, and hath made us sit together in the heavenly places, through Christ Jesus. [7] That he might shew in the ages to come the abundant riches of his grace, in his bounty towards us in Christ Jesus. [8] For by grace you are saved through faith, and that not of yourselves, for it is the gift of God; [9] Not of works, that no man may glory. [10] For we are his workmanship, created in Christ Jesus in good works, which God hath prepared that we should walk in them. (Eph. 2)
The passage teaches the Catholic teaching: we are saved by grace alone, which is not a result of our works. We are saved through both faith and good works, which are our response to grace. We are not saved by faith alone.
Grace is a gift, a person cannot earn a gift.
Romans 11:6 But if it is by grace, it is no longer on the basis of works; otherwise grace would no longer be grace.
We are saved by grace, not by works.
I agree that a Christian good works are the response to grace. But are done in obedience to God, not as a component of the formula to earn salvation.
Galations 5:6 For in Christ Jesus neither circumcision nor uncircumcision counts for anything, but only faith working through love.