Without a doubt, we are saved solely by the grace of God; there is nothing we can ever do to earn our salvation (Ephesians 2:8-9). On our own, we are all disqualified from salvation, because each of us has sinned and fallen short of God’s standard for eternal life (Romans 3:23). If not for the loving grace and mercy of God, we would all be lost and without hope. Thanks to His love though, we need not despair.
Because of His amazing grace and the sacrifice of Jesus on our behalf, we can be saved from the hopelessness of sin. We can have hope because death is not the end for those who place their faith and trust in Jesus Christ. I believe the sincerity of our faith is proven by doing the work He has given us to do (Ephesians 2:10). Our salvation is free, but it is not cheap.