en_obs-tn/content/10/04.md

God sent frogs all over Egypt

This could be translated as: “God caused many frogs to appear throughout Egypt.”

hardened his heart

He became stubborn again and refused to obey God. Here hardened is a synecdoche that refers to Pharaoh. His stubborn attitude is spoken of as if his heart were hard. Alternate translation: “will cause Pharaoh to be stubborn” (See: rc://en/ta/man/translate/figs-synecdoche, rc://en/ta/man/translate/figs-metaphor)