This sermon explores Psalm 15 as a direct response to the depiction of human depravity in the preceding psalms, asking who is qualified to enter the presence of the holy God. The text identifies the righteous one described in the psalm as Christ, who perfectly fulfills the requirements of blamelessness, truthfulness, and covenant faithfulness. By analyzing the typological connection between Mount Zion and the heavenly temple, the message emphasizes that access to God's presence is found solely in Christ, who remains unshaken in His mission to redeem. The sermon concludes with the assurance that believers, united with this unmovable Christ, possess a stable foundation and are called to persevere in faith rather than relying on their own merit.