And when he saw that, he arose, and went for his life, and came to Beersheba, which belongeth to Judah, and left his servant there.

Wesley's Notes

19:3 Left his servant - Because he would not expose him to those perils and hardships which he expected: and because he desired solitude, that he might more freely converse with God.

Jamieson-Fausset-Brown Bible Commentary

3. he arose, and went for his life-He entered Jezreel full of hope. But a message from the incensed and hard-hearted queen, vowing speedy vengeance for her slaughtered priests, dispelled all his bright visions of the future. It is probable, however, that in the present temper of the people, even she would not have dared to lay violent hands on the Lord's servant, and purposely threatened him because she could do no more. The threat produced the intended effect, for his faith suddenly failed him. He fled out of the kingdom into the southernmost part of the territories in Judah; nor did he deem himself safe even there, but, dismissing his servant, he resolved to seek refuge among the mountain recesses of Sinai, and there longed for death (Jas 5:17). This sudden and extraordinary depression of mind arose from too great confidence inspired by the miracles wrought at Carmel, and by the disposition the people evinced there. Had he remained steadfast and immovable, the impression on the mind of Ahab and the people generally might have been followed by good results. But he had been exalted above measure (2Co 12:7-9), and being left to himself, the great prophet, instead of showing the indomitable spirit of a martyr, fled from his post of duty.

Matthew Henry's Concise Commentary

19:1-8 Jezebel sent Elijah a threatening message. Carnal hearts are hardened and enraged against God, by that which should convince and conquer them. Great faith is not always alike strong. He might be serviceable to Israel at this time, and had all reason to depend upon God's protection, while doing God's work; yet he flees. His was not the deliberate desire of grace, as Paul's, to depart and be with Christ. God thus left Elijah to himself, to show that when he was bold and strong, it was in the Lord, and the power of his might; but of himself he was no better than his fathers. God knows what he designs us for, though we do not, what services, what trials, and he will take care that we are furnished with grace sufficient.