Father, glorify thy name. — The pronoun “Thy” is emphatic. The Son’s will is one with that of the Father; the Son’s glory is in the glorifying the Father’s name. Comp. the opening clause of the Lord’s Prayer (Note on Matthew 6:9 et seq.) and in this context Note on John 12:23.
Then came there a voice from heaven. — The words mean, not that a sound came from heaven, but that there was heard an articulate voice (comp. Note on John 3:8); and that St. John intended his readers to understand this cannot be questioned. He records here a fact parallel to those recorded by the other Evangelists at the Baptism (Matthew 3:17; Mark 1:11; Luke 4:22), and at the Transfiguration (Matthew 17:5; Mark 9:7; Luke 9:35), and parallel to that to which St. Luke and St. Paul have testified (Acts 9:4; Acts 22:9; Acts 26:14).
I have both glorified it, and will glorify it again. — The words are without limit, extending to the whole past and to the whole future of God’s revelation of Himself to man. The only limit in the context is that this revelation is thought of as in the person of Christ. His words, His works. His life revealing the mercy and love and majesty of the Father, had to many hearts glorified the Father’s name. The wider future is at hand. The death and resurrection are to reveal God’s character, and therefore glorify the Father’s name to all the world. (Comp. Exodus 33:18-19; Exodus 34:5-7.)