Joshua 1:8

The Book of the Law shall not depart from your mouth, but you shall meditate in it day and night, that you may observe to do according to all that is written in it.  For then you will make your way prosperous, and then you will have good success.

Sometimes it is easier to study verses of the Bible out loud to memorize them because we don’t know when we will need them.  When we want to do something well, we will practice so it will become automatic. That is what God is saying here to practice, so His directions become automatic in times of stress we instantly turn to God, and His Word will come out of our mouths.