The Church has traditionally recognized the psalms as first and foremost the prayers of Christ. Of course, the prayers were composed by David and others, and used in the temple and elsewhere in the worship life of Israel, but the Christian church has often read the psalms as being the very prayers of Jesus. This makes sense, because so many of the psalms are fulfilled in Christ (no bone broken) or actually spoken by Christ in the NT (My God, My God).
But apparently not as many Christians as you would think know to read the psalms in this way, even though it may be the most devotional and powerful way to pray them.
On this Good Friday evening, and Holy Saturday, read Psalm 27 as the words and prayer of Christ, and read the final verse as Christ's word to you as you wait for Easter morning.