How does salvation work in believers according to the sermon?

The sermon highlights that salvation occurs in three stages: we have been saved, we are being saved, and we will be saved. This means that, while our justification is complete in Christ and cannot grow, our sanctification is an ongoing work, where believers are continuously conformed to Christ's image. Philippians 1:6 assures us that He who began a good work in us will carry it on to completion. Thus, each believer is on a progressive journey with the assurance that God’s grace is actively working in them, shaping their character and conduct.