"Did God forsake Elijah in his hour of trial? Oh, no! He loved His servant no less when Elijah felt himself forsaken of God and man than when, in answer to his prayer, fire flashed from heaven and illuminated the mountaintop. And now, as Elijah slept, a soft touch and a pleasant voice awoke him. He started up in terror, as if to flee, fearing that the enemy had discovered him. But the pitying face bending over him was not the face of an enemy, but of a friend. God had sent an angel from heaven with food for His servant. “Arise and eat,” the angel said. “And he looked, and, behold, there was a cake baken on the coals, and a cruse of water at his head.” PK 166.1"
"And as he lay and slept under a juniper tree, behold, then an angel touched him, and said unto him, Arise and eat."
The EGW passage directly recounts the biblical story of Elijah being fed by an angel in 1 Kings 19:5, including a direct quote. This is a clear and explicit allusion.
"Then the devil leaveth him, and, behold, angels came and ministered unto him."
Both passages involve angels ministering to individuals in need. While the context differs (Jesus' temptation vs. Elijah's flight), the theme of divine assistance through angels is present in both.
"After Elijah had partaken of the refreshment prepared for him, he slept again. A second time the angel came. Touching the exhausted man, he said with pitying tenderness, “Arise and eat; because the journey is too great for thee.” “And he arose, and did eat and drink;” and in the strength of that food he was able to journey “forty days and forty nights unto Horeb the mount of God,” where he found refuge in a cave. PK 166.2"
"And he arose, and did eat and drink, and went in the strength of that meat forty days and forty nights unto Horeb the mount of God."
The EGW passage directly quotes and elaborates on 1 Kings 19:8, making it a clear and explicit allusion.