Charles Spurgeon Commentary John 12:28-30

"Father, glorify thy name. There came therefore a voice out of heaven, [saying], I have both glorified it, and will glorify it again. The multitude therefore, that stood by, and heard it, said that it had thundered: others said, An angel hath spoken to him. Jesus answered and said, This voice hath not come for my sake, but for your sakes." — John 12:28-30 (ASV)

Saying, I have both glorified it, and will glorify it again. The people therefore, that stood by, and heard it, said that it thundered: others said, An angel spake to him. Jesus answered and said, This voice came not because of me, but for your sakes.

"You needed to be strengthened as to the divine character and authority of my mission; you required to be comforted with the full assurance that I will indeed be glorifying my Father even when I die upon the cross of Calvary."