Whatever other factors were present in the cases of Elijah and others, there is no doubt that the Physical and Nervous drain of recent experiences gave the cowardly enemy very promising ground for his assault.
When Moses made his great mistake at the rock it is evident that he was an overwrought man, and although the weakness is given full uncovering and the result shown to be very grievous in a temporal way, he was never afterward repudiated in history as a failure; rather was he with the Lord on the Mount of Transfiguration. David still held his place of high honor and value in Divine purposes, and his name runs to the end of Scripture with Divine recognition despite the grievous fallings in the way.
He suffered, it is true, but God knows that in the lives of those who count for Him there are forces at work which are extra to the ordinary human weaknesses.
This is made so clear in the case of Peter, whose terrible failure was said by the Lord to be the work of Satan; and there is no doubt but that Satan knew Peter's weak point and weak moment.
We must, however, bear in mind that, while the Scriptures on these matters are given us for our comfort, and to magnify the grace of God, they are not meant to weaken us or excuse our weakness, but to make us aware of how Satan can get an advantage, and to indicate the danger points along the way of spiritual usefulness.
In the case of Elijah before us, there is one thing that we want to note, and the noting of which we feel will be a help to some. It is this: in the moment of his weakness Satan sowed a lie in Elijah's mind, and Elijah accepted it. Our Lord said of Satan that "he is a liar, and the father thereof" (John 8:44). In this case he begot the lie that Elijah was the only faithful prophet of God left in Israel. There was ground for that seed. The man was fighting a lonely battle; ploughing a lonely furrow; walking a lonely path. There is no doubt about that.
~T. Austin Sparks~