Psalms 89:18

For the LORD is our defence; and the Holy One of Israel is our king.

The declaration stands within the covenant promises made to David and his house of lasting rule and mercy, promises that look forward to the eternal ages. It affirms that the Lord Himself is the defense of His people, their protection and shield. It affirms likewise that the Holy One of Israel is their king and ruler.

His reign as sovereign brings blessing to created beings. The covenant assurances expressed here find their complete fulfillment in Christ, in whom the lasting rule and mercy pledged to David are realized. Because He is both protector and ruler, His people may rest their confidence in His power and care.