“Watch and pray lest ye enter into temptation. The spirit truly is ready, but the flesh is weak.” It should be the Christian’s daily motto from the time of his conversion to the hour of his death. Are we true Christians and would we keep our souls awake? Let us not forget that we have within us a double nature, —a ready “spirit” and weak “flesh,” —a carnal nature inclined to evil, and a spiritual nature inclined to good. These two are contrary one to the other (Gal. 5:17). Sin and the devil will always find helpers in our hearts. If we do not crucify and rule over the flesh, it will often rule over us and bring us to shame….The man who knows his own weakness, and knowing it both watches and prays, is the man that will be held up and not allowed to fall.
– Christ in the Garden by J. C. Ryle