וַֽיַּאֲמֵ֖ן הָעָ֑ם וַֽיִּשְׁמְע֡וּ כִּֽי־פָקַ֨ד יְהוָ֜ה אֶת־בְּנֵ֣י יִשְׂרָאֵ֗ל וְכִ֤י רָאָה֙ אֶת־עָנְיָ֔ם וַֽיִּקְּד֖וּ וַיִּֽשְׁתַּחֲוּֽוּ׃
And the people believed; and when they heard that the LORD had remembered the children of Israel, and that He had seen their affliction, then they bowed their heads and worshipped.
Read halakhic rulings (Jewish law) on Exodus 4:31: and classical halakhic sources.