Why did Jesus weep when he went to see Martha and Mary after Lazarus died?
Let's review the passage in the Gospel of John where we see Jesus described as weeping:
Though Jesus had the power to raise Lazarus from the dead and even knowing that this would happen shortly, neverthelsss Jesus felt human emotion and compassion, not only for Lazarus but for his family as well. We see in the scripture how Lazarus' family was mourning over his loss, and Jesus was apparently overcome with emotion as He shared their grief.
We sometimes diminish His humanity and think because He could correct this situation supernaturally, He had no reason to show emotion over the death of Lazarus. Clearly, this is a false assumption, as Jesus was deeply touched in seeing many of his friends languishing over the death of a loved one. It's likely also that He was moved by the consequences of man's sin, being death and suffering.