Contradiction with Psalm 121:3-4
While 1 Kings 19:5 shows Elijah needing sleep, this verse states that God neither slumbers nor sleeps, indicating a divine contrast in rest requirements.
Psalm 121:3-4: He will not suffer thy foot to be moved: he that keepeth thee will not slumber.
Contradiction with Isaiah 40:29-31
Elijah is weary and resting under the juniper tree, yet these verses promise that those who wait on the Lord will renew their strength and not be weary.
Isaiah 40:29-31: He giveth power to the faint; and to [them that have] no might he increaseth strength.