While researching my sermon for Sunday (Elijah's Despair in 1 Kings 19), I found this wonderful commentary by A. W. Pink on verse 5 - "Then he laid down under the tree and fell asleep."
Thus it was here: the Lord evidenced His pity for His overwrought and disconsolate servant in a most gracious manner, for the next thing that we read of is that he "slept under a juniper tree" (v. 5). But the force of that is apt to be lost upon us, in this God-dishonoring day, when there are few left who realize that "He giveth His beloved sleep" (Ps. 127:2). It was something better than "nature taking its courses: it was the Lord refreshing the weary prophet.
How often is it now lost sight of that the Lord cares for the bodies of His saints as well as for their souls. This is more or less recognized and owned by believers in the matter of food and clothing, health and strength, but it is widely ignored by many concerning the point we are here treating of. Sleep is as imperative for our physical well-being as is food and drink, and the one is as much the gift of our heavenly Father as is the other. We cannot put ourselves to sleep by any effort of will, as those who suffer with insomnia quickly discover. Nor does exercise and manual labour of itself ensure sleep: have you ever lain down almost exhausted and then found you were "too tired to sleep"? Sleep is a Divine gift, but the nightly recurrence of it blinds us to the fact.
When is so pleases Him, God withholds sleep, and then we have to say with the Psalmist, "Thou holdest mine eyes waking" (77:4). but that is the exception rather than the rule, and deeply thankful should we be that it is so. Day by day the Lord feeds us, and night by night He "giveth His beloved sleep." Thus in this little detail—of Elijah’s sleeping under the juniper tree—which we are likely to pass over lightly, we should perceive the gracious hand of God ministering in tenderness to the needs of one who is dear unto Him. Yes, "the Lord pitieth them that fear Him," and why? "for He knoweth our frame; He remembereth that we are dust" (Ps. 103:14). He is mindful of our frailty, and tempers His winds accordingly; He is aware when our energies are spent, and graciously renews our strength. It was not God’s design that His servant should die of exhaustion in the wilderness after his long, long flight from Jezreel, so he mercifully refreshes his body with sleep. And thus compassionately does He deal with us.
Alas, how little are we affected by the Lord’s goodness and grace unto us. The unfailing recurrence of His mercies both temporally and spiritually inclines us to take them as a matter of course. So dull of understanding are we, so cold our hearts Godward, it is to be feared that most of the time we fail to realize whose loving hand it is which is ministering to us. Is not this the very reason why we do not begin really to value our health until it is taken from us, and not until we spend night after night tossing upon a bed of pain do we perceive the worth of regular sleep with which we were formerly favored? And such vile creatures are we that, when illness and insomnia come upon us, instead of improving the same by repenting of our former ingratitude, and humbly confessing the same to God, we murmur and complain at the hardness of our present lot and wonder what we have done to deserve such treatment. O let those of us who are still blessed with good health and regular sleep fail not daily to return thanks for such privileges and earnestly seek grace to use the strength from them to the glory of God.