Deuteronomy 8:2

Deuteronomy 8:2. And thou shalt remember all the way which the LORD thy God led thee these forty years in the wilderness, to humble thee, and to prove thee, to know what was in thine heart, whether thou wouldest keep his commandments, or no.

Look back, and derive from your past experience a motive for more careful obedience in the future. He does not read his own life aright who does not see in it abundant causes for gratitude; and how can gratitude express itself better than by a cheerful, hearty obedience in the present and the future?