C. F. Keil and Franz Delitzsch on 2 Kings 4:31

2Ki 4:31

Gehazi did as he was commanded, but the dead child did not come to life again; the prophet’s staff worked no miracle. “There was no sound and no attention,” i.e., the dead one gave no sign of life. This is the meaning of קשׁב ואין קול אין both here and 1Ki 18:29, where it is used of dead idols. The attempt of Gehazi to awaken the child was unsuccessful, not propter fidem ipsi a muliere non adhibitam (Seb. Schm.), nor because of the vainglory of Gehazi himself, but simply to promote in the godly of Israel true faith in the Lord.