Psalm 19:7 in the King James Version
The law of the LORD is perfect, converting the soul: the testimony of the LORD is sure, making wise the simple.
Context
6 His going out is from the end of the heavens, his circuit to its ends. There is nothing hidden from its heat.
7 The LORD’s law is perfect, restoring the soul. The LORD’s covenant is sure, making wise the simple.
8 The LORD’s precepts are right, rejoicing the heart. The LORD’s commandment is pure, enlightening the eyes.