2 Kings 20:8
And Hezekiah said unto Isaiah, What shall be the sign that the Lord will heal me, and that I shall go up into the house of the Lord the third day?
Cross-reference
In Judges 6:17, Gideon similarly asks for a sign to confirm God's promise — both seek visible proof of divine assurance.
Isaiah 38:22 records the same request from Hezekiah's illness narrative — a parallel account of the sign for his healing.
In Genesis 15:8, Abraham asks for a sign to confirm God's promise of land — a parallel request for divine confirmation through a sign.
In 2 Chronicles 32:31, the sign of Hezekiah's healing is recalled, and God tests him afterward — continuing the same story.
In Isaiah 38:7, Isaiah gives the same sign Hezekiah requested — a direct parallel from the parallel account of this event.
In Isaiah 7:11, God offers Ahaz a sign but he refuses — contrasting with Hezekiah who actively asks for a sign of healing.