John Calvin on John 12:26

26. If any, man serve me. That death may not be exceedingly bitter and disagreeable to us, Christ invites us by his example to submit to it cheerfully; and certainly we shall be ashamed to refuse the honor of being his disciples. But on no other condition does he admit us into their number, except that we follow the path which he points out. He leads the way to us to suffer death. The bitterness of death is therefore mitigated, and is in some measure rendered agreeable, when we have in common with the Son of God the condition of submitting to it. So far is it from being proper that we should shrink from Christ on account of the cross, that we ought rather to desire death for his sake. To the same purpose. pose is the statement which immediately follows:

And where I am, there shall also my servant be. For he demands that his servants should not refuse to submit to death, to which they see him go before them as an example; for it is not right that; the servant should have any thing separate from his lord.. The future tense, shall be, (ἔσται) is put for let him be, according to the custom of the Hebrew language. Others regard it as a consolation, as if Christ promised to those who should not be unwilling to die along with him, that they would be partakers of his resurrection. But the former view, as I have said, is more probable; for he afterwards adds the consolation, that the Father will not leave without reward the servants of Christ who shall have been his companions both in life and in death.

John 12:27-33

27. Now is my soul troubled, and what shall I say? Father, save me from this hour; but for this cause came I into this hour. 28. Father, glorify thy name. Then came a voice from heaven, I have both glorified and will glorify it again. 29. Therefore the multitude, who were there, and heard it, said that it thundered. Others said, An angel spoke to him. 30. Jesus answered and said, This voice came not for my sake, but for yours. 31. Now is the judgment of this world; now is the prince of this world cast out. 32. And I, if I be lifted up from the earth, will draw all men to me. 33. Now this he said, intimating by what death he should die.