Adam Clarke on Psalms 105:25

He turned their heart - "Their heart was turned." So the Syriac and Arabic. After befriending the Hebrews on Joseph's account, to whom they were so deeply indebted, finding them to multiply greatly in the land, and at last to become more powerful than the Egyptians themselves, they turned their attention to the adoption of measures, in order to prevent the Hebrews from possessing themselves of the government of the whole land; they curtailed them of their privileges, and endeavored to depress them by all possible means, and by a variety of legal enactments. This appears to be the sole meaning of the phrase, "He turned their heart;" or, "their heart was turned."