How do we know that Christ is the subject of Psalm 18?

The interpretation of Psalm 18 as pointing to Christ is supported by its Christological focus and the New Testament's application of its themes. For instance, Hebrews 2:12-13 quotes Psalm 18 in relation to Jesus, indicating that He identifies with humanity and declares God's name among His brothers. The psalmist's cry for deliverance resonates with Christ's own experience at the cross, where He relied on God for salvation amidst overwhelming foes. This typological reading of David as a king also foreshadows Christ as the ultimate King, who delivers His people and triumphs over sin and death through His own righteousness. Thus, we see that the psalm not only reflects David's experience but foreshadows the life, sufferings, and victories of Christ.