Charles Ellicott Commentary 2 Kings 4:34

"And he went up, and lay upon the child, and put his mouth upon his mouth, and his eyes upon his eyes, and his hands upon his hands: and he stretched himself upon him; and the flesh of the child waxed warm." — 2 Kings 4:34 (ASV)

He went up. —Upon the bed (2 Kings 1:6).

And lay upon the child. —Compare to 1 Kings 17:21. What is hinted at there is described here (Thenius).

Stretched himself upon the child. — Bowed himself. So Septuagint, Syriac, and Vulgate (Compare to 1 Kings 18:42). This expression summarizes the preceding details.

The flesh of the child became warm. — The life of the Divine Spirit which was in Elisha was miraculously imparted by contact to the lifeless body .