An angel touched him - The friendly ministration of angels, common in the time of the patriarchs Genesis 18:2-16; Genesis 19:1-22; Genesis 28:12; Genesis 32:1, Genesis 32:24-29, and known also under the Judges Jdg 6:11-21; 13:3-20, was now extended to Elijah. Any other explanation of this passage does violence to the words. It is certainly not the intention of the writer to represent Elijah as relieved on this occasion by a human "messenger."

1 Kings 19:5 Parallel Commentaries

The Call of Elisha
God had bidden Elijah anoint another to be prophet in his stead. "Elisha the son of Shaphat . . . shalt thou anoint to be prophet in thy room" (1 Kings 19:16), He had said; and in obedience to the command, Elijah went to find Elisha. As he journeyed northward, how changed was the scene from what it had been only a short while before! Then the ground was parched, the farming districts unworked, for neither dew nor rain had fallen for three and a half years. Now on every hand vegetation was springing …
Ellen Gould White—The Story of Prophets and Kings

"My Little Children, These Things Write I unto You, that Ye Sin Not. And if any Man Sin, we have an Advocate with the Father,"
1 John ii. 1.--"My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father," &c. The gospel is an entire uniform piece, all the parts of it are interwoven through other, and interchangeably knit together, so that there can be no dividing of it any more than of Christ's coat that was without seam. If you have it not altogether by the divine lot, you cannot truly have any part of it, for they are so knit together, that if you disjoin …
Hugh Binning—The Works of the Rev. Hugh Binning

The Case of the Christian under the Hiding of God's Face.
1. The phrase scriptural.--2. It signifies the withdrawing the tokens of the divine favor.--3 chiefly as to spiritual considerations.--4. This may become the case of any Christian.--5. and will be found a very sorrowful one.--6. The following directions, therefore, are given to those who suppose it to be their own: To inquire whether it be indeed a case of spiritual distress, or whether a disconsolate frame may not proceed from indisposition of body,--7. or difficulties as to worldly circumstances.--8, …
Philip Doddridge—The Rise and Progress of Religion in the Soul