John 11 is relevant, specifically:
Then when Mary was come where Jesus was, and saw him, she fell down at his feet, saying unto him, Lord, if thou hadst been here, my brother had not died. When Jesus therefore saw her weeping, and the Jews also weeping which came with her, he groaned in the spirit, and was troubled, And said, Where have ye laid him? They said unto him, Lord, come and see. 35Jesus wept. 36Then said the Jews, Behold how he loved him!
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I can't say what I think is the reason for Jesus' emotion here without Sand buzzard spewing.
I cannot speak for most of mankind with even that degree of assurance.
I can speak for myself, and for Herself, and for Number 1 Son, whose minds and reactions are familiar to me.
We are two-edged beings, with a physical component in the Kosmos and an associated soul [not going to define it here, take it or leave it] which is mostly outside.
The physical is racked with hormones and its limited intelligence knows nothing but HERE and the body's needs and wants. The soul has a different intelligence and very different emotions.
When last Saturday Simone died / left here - body and soul parting company - our physical reaction was mixed joy at the end of great strain and anger / fear / grief at the awareness of death and separation. Memories - positive and negative - were stirred up. The result was a mixture of pain, relief and anger - all of which elicited tears.
Our souls were similarly aware that Simone had moved to the outside - and we are for whatever time stuck here. The outcome rather bittersweet, and inclined not to counteract the tearing. Though at those points where the soul attitudes are dominant tears are less likely.