The coming of the Messiah will be the start of the time when all weeping will be driven away because sin, the most common, if not the only source of weeping, will be put to death. I am taking a little bit of liberty with the texts here but nothing that cannot be substantiated with the use of other texts. It is perfectly alright to interpret a text with the help of other texts.
Isaiah 30:19-21, 23-26
19 Thus says the Lord God, the Holy One of Israel: O people of Zion, who dwell in Jerusalem, no more will you weep; he will be gracious to you when you cry out, as soon as he hears he will answer you. 20 The Lord will give you the bread you need and the water for which you thirst. No longer will your Teacher hide himself, but with your own eyes you shall see your Teacher, 21 while from behind, a voice shall sound in your ears, “This is the way; walk in it,” when you would turn to the right or to the left. 23 He will give rain for the seed that you sow in the ground, and the wheat that the soil produces will be rich and abundant. On that day your cattle will graze in spacious meadows; 24 the oxen and the asses that till the ground will eat silage tossed to them with shovel and pitchfork. 25 Upon every high mountain and lofty hill there will be streams of running water. On the day of the great slaughter, when the towers fall, 26 the light of the moon will be like that of the sun and the light of the sun will be seven times greater like the light of seven days. On the day the LORD binds up the wounds of his people, he will heal the bruises left by his blows.
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