41 And when he drew near and saw the city he wept over it, 42 saying, "Would that even today you knew the things that make for peace! But now they are hid from your eyes. 43 For the days shall come upon you, when your enemies will cast up a bank about you and surround you, and hem you in on every side, 44 and dash you to the ground, you and your children within you, and they will not leave one stone upon another in you; because you did not know the time of your visitation."
Daily Quote from the early church fathers:
Jesus fulfills the beatitude for those who weep, by Origen of Alexandria (185-254 AD)
"When our Lord and Savior approached Jerusalem, he saw the city and wept... By his example, Jesus confirms all the Beatitudes that he speaks in the Gospel. By his own witness, he confirms what he teaches. 'Blessed are the meek,' he says. He says something similar to this of himself: 'Learn from me, for I am meek.' 'Blessed are the peacemakers.' What other man brought as much peace as my Lord Jesus, who 'is our peace,' who 'dissolves hostility' and 'destroys it in his own flesh' (Ephesians 2:14-15). 'Blessed are those who suffer persecution because of justice.'
"No one suffered such persecution because of justice as did the Lord Jesus, who was crucified for our sins. The Lord therefore exhibited all the Beatitudes in himself. For the sake of this likeness, he wept, because of what he said, 'Blessed are those who weep,' to lay the foundations for this beatitude as well. He wept for Jerusalem and said,'If only you had known on that day what meant peace for you! But now it is hidden from your eyes,' and the rest, to the point where he says, 'Because you did not know the time of your visitation'" (excerpt from HOMILY ON THE GOSPEL OF LUKE 38.1–2)