What does Psalm 66:5 mean?

This continues an appeal to the entire world to praise God joyfully (Psalm 66:1–4). Here, the psalmist invites them to consider the incredible signs which God has given so we can know Him. This verse repeats (Psalm 66:3) use of the word "awesome," which implies something astounding or overwhelming. By His almighty power God performed miraculous deeds. Those acts gave both Israelites and Gentiles clear evidence of His power and sovereignty. The parting of the Red Sea is one such act (Psalm 66:6).

However, the Lord's works were not limited to that historic event. Creation testifies to His omnipotence and sovereignty (Psalm 19:1). Hebrews 11:3 says, "By faith we understand that the universe was created by the word of God, so that what is seen was not made out of things that are visible." The world of diverse terrain, varied climates, unique life, what we can see of the planets and space, the orderly laws of nature—not to mention human life, itself—all bear witness to God's infinite power (Romans 1:18–20).