Kings IV 1:4

4 For thus saith the Lord, The bed on which thou art gone up, thou shalt not come down from it, for thou shalt surely die. And Eliu went, and said to them.

Kings IV 1:4 In-Context

2 And Ochozias fell through the lattice that was in his upper chamber in Samaria and was sick; and he sent messengers, and said to them, Go and enquire of Baal fly, the god of Accaron, whether I shall recover of this my sickness. And they went to enquire of him.
3 And an angel of the Lord called Eliu the Thesbite, saying, Arise, and go to meet the messengers of Ochozias king of Samaria, and thou shalt say to them, because there is no God in Israel, ye go to enquire of Baal fly, the God of Accaron? but not so.
4 For thus saith the Lord, The bed on which thou art gone up, thou shalt not come down from it, for thou shalt surely die. And Eliu went, and said to them.
5 And the messengers returned to him, and he said to them, Why have ye returned?
6 And they said to him, A man came up to meet us, and said to us, Go, return to the king that sent you, and say to him, Thus saith the Lord, because there is no God in Israel, thou goest to enquire of Baal fly, the God of Accaron? not so: the bed on which thou art gone up, thou shalt not come down from it, for thou shalt surely die.

The Brenton translation of the Septuagint is in the public domain.