How do we know Jesus is our true Redeemer?

In Psalm 24, it is made clear that only those with clean hands and a pure heart can ascend to God's holy hill. Throughout the sermon, it is emphasized that these conditions are met in Christ alone. He is the only one who has lived a sinless life—having clean hands and a pure heart—and thus qualifies to stand in the presence of God. Furthermore, Hebrews 1:3 explains that Jesus 'by himself purged our sins' and entered the heavenly sanctuary as our mediator. It is through faith in Him that we receive righteousness and access to God, underscoring His role as our Redeemer.