How do we know the true gospel is the gospel of grace?

The true gospel of grace is grounded in the understanding that salvation is not based on human efforts or conditions but is solely a gift from God. Ephesians 2:8-9 states, 'For by grace you are saved through faith, and that not of yourselves: it is the gift of God: not of works, lest any man should boast.' This underscores the fundamental Reformed view that God's sovereign grace is the only means of salvation. Any gospel that introduces conditions or works as a basis for salvation compromises this core truth. The simplicity of the gospel lies in the belief that it is entirely in Christ's finished work, not in our actions.