What does Psalm 9:9 mean?

David mentions "the oppressed" here, which implies people abused by those who exercise control over them. The Hebrew word implies something being crushed or harassed. Perhaps the abusers were political rulers or wealthy landowners.

God is identified as "a stronghold" for those abused in such ways. In Hebrew terminology, a "stronghold" was a high, safe, refuge. It was a place where people could seek security from attackers or enemies. The root word, in fact, most literally means "height." David often resorted to strongholds during his wilderness exile, but he felt safest in his reliance on the Lord.

Echoing this sentiment, the sons of Korah write in Psalm 46:1, "God is our refuge and strength, a very present help in trouble." Psalm 91:2 declares, "I will say to the LORD, 'My refuge and my fortress, my God, in whom I trust." When adversity is extreme, those who trust in the Lord can turn to the Lord for safety. He is infinitely more powerful than any abuser. The apostle John assures believers, "He who is in you is greater than he who is in the world" (1 John 4:4).