Perceive ye how ye prevail nothing? — The words may be also read, “Look how ye profit nothing” (imperative); or, Ye perceive how ye profit nothing (indicative). Upon the whole this last is to be preferred. They blame each other for the failure of all their plans (comp. John 11:47), and prepare themselves to accept the counsel of Caiaphas.
Behold, the world is gone after him. — They use terms which express the bitterness of their despair. They who had asked in scorn, “Have any of the rulers or of the Pharisees believed on him?” who called “cursed” “this people who knoweth not the law” who followed Him (John 7:48-49), have heard Jews of Jerusalem express their belief in Him; and now, see Him whom they are seeking to kill, borne as the Messiah at the head of a throng of pilgrims.
The words rendered “gone after him” apply that they had gone away from themselves, and rejected their authority; and had then gone after Him. (Comp. Note on John 12:11.)