Deuteronomium 11:19

Verse 19. And you shall impress them upon all the derivative principles of the mind, meditating on them when you are retired into the inmost recesses of your will, and when your intentions go forth into thoughts and deeds, and they shall be present with you when your mind is engaged in worldly business (and your soul is, as it were, asleep), and when you are elevated by the Lord towards more interior things.