John Calvin on John 11:38

38. Jesus therefore again groaning within himself. Christ does not approach the sepulcher as an idle spectator, but as a champion who prepares for a contest; and therefore we need not wonder that he again groans; for the violent tyranny of death, which he had to conquer, is placed before his eyes. Some explain this groan to have arisen from indignation, because he was offended at that unbelief of which we have spoken. But another reason appears to me far more appropriate, namely, that he contemplated the transaction itself rather than the men. Next follow various circumstances, which tend to display more fully the power of Christ in raising Lazarus. I refer to the time of four days, during which the tomb had been secured by a stone, which Christ commands to be removed in presence of all.

John 11:39-44

39. Jesus saith, Remove the stone. Martha, the sister of him who was dead, saith to him, Lord, he already stinketh, for this is the fourth day. 40. Jesus saith to her, Did I not tell thee that, if thou believe, thou shalt see the glory of God? 41. They therefore removed the stone from the place where he who was dead lay. And Jesus again lifted up his eyes, and said, Father, I thank thee that thou hast heard me. 42. And I knew that thou hearest me always, but, on account of the multitude around me, I said it, that they may believe that thou hast sent me. 43. Having spoken these words, he cried with a loud voice, Lazarus, come forth. 44. And he who had been dead came forth, bound hand and foot with bandages, and his face was wrapped in a napkin. Jesus saith to them, Loose him, and let him go.