A common misinterpretation views this verse as portraying God as arbitrarily cruel or bloodthirsty, isolating the destruction of Egypt's firstborn from its historical and theological context of divine judgment on Pharaoh's hardened heart and Israel's prolonged oppression, thereby overlooking the broader narrative of God's patience, warnings through Moses, and redemptive purpose in forming a covenant nation; others might wrongly apply it as a blanket endorsement of human violence or revenge, ignoring that the psalm emphasizes God's unique prerogative in judgment, not a model for personal vendettas.
Psalms 135:8
King James Version (1769)
8 Who smote the firstborn of Egypt, both of man and beast.
Psalms 135:8 celebrates God's sovereign power displayed in the tenth plague on Egypt, where He struck down the firstborn of both humans and animals, as recounted in Exodus, demonstrating His supremacy over all creation and His righteous judgment against a nation that enslaved His people Israel; this verse is part of a psalm extolling Yahweh's mighty acts in history, affirming His faithfulness in deliverance and calling believers to praise Him for His unrivaled authority that brings salvation to the oppressed while executing justice on the wicked.