Isaiah 39:7
And of thy sons that shall issue from thee, which thou shalt beget, shall they take away; and they shall be eunuchs in the palace of the king of Babylon.
Cross-reference
Isaiah 56:3 reverses the curse: eunuchs are no longer excluded but promised a place, contrasting the fate of Hezekiah's sons.
Daniel 1:2-7 tells of Daniel and friends, likely from the royal family, taken to serve in Babylon's palace, fulfilling Isaiah's prophecy about eunuchs there.
Jeremiah 25:9 expands on the same Babylonian judgment, with God using Nebuchadnezzar to destroy Judah, fulfilling the exile threat.
Daniel 1:3 records the literal fulfillment: Babylonian officials take Israelite royalty and eunuchs, as prophesied here.
2 Kings 24:12 records the capture of Hezekiah's descendant Jehoiachin, a partial fulfillment of the prophecy that sons will be taken to Babylon.
Habakkuk 1:6 identifies the Chaldeans as God's instrument, the same nation that will carry Hezekiah's sons into exile.
Matthew 19:12 mentions eunuchs 'made by men,' echoing the forced eunuch status of Hezekiah's sons, but used for a new teaching.
Micah 1:16 calls for mourning as children go into exile, matching the fate of Hezekiah's descendants taken to Babylon.
Zephaniah 1:8 warns of punishment on the king's sons, paralleling the judgment on Hezekiah's progeny.