The Messiah would be sorrowful because of the Jews' unbelief.
OT Prophecy NT Fulfillment
Isaiah 49:4
"Then I said, I have laboured in vain, I have spent my strength for nought, and in vain: yet surely my judgment is with the LORD, and my work with my God."
Luke 19:41–42
[41] And when he was come near, he beheld the city, and wept over it.
[42] Saying, If thou hadst known, even thou, at least in this thy day, the things which belong unto thy peace! but now they are hid from thine eyes.
Tanakh – Neviim – Isaiah 49:4
"But I said: 'I have laboured in vain, I have spent my strength for nought and vanity; yet surely my right is with HaShem, and my recompense with my G-d.'"
Hebrew OT – Isaiah 49:4
[49:4] וַאֲנִי אָמַרְתִּי לָרִיק יָגַעְתִּי
לְתוֹהוּ וְהֶבֶל כֹּחִי כִּלֵּיתִי
אָכֵן מִשְׁפָּטִי אֶת־יְהוָה
וּפְעֻלָּתִי אֶת־אֱלֹהָי