Kings III 1:30

30 as I swore to thee by the Lord God of Israel, saying, Solomon thy son shall reign after me, and he shall sit upon my throne in my stead, so will I do this day.

Kings III 1:30 In-Context

28 And king David answered and said, Call me Bersabee: and she came in before the king, and stood before him.
29 And the king swore, and said, the Lord lives who redeemed my soul out of all affliction,
30 as I swore to thee by the Lord God of Israel, saying, Solomon thy son shall reign after me, and he shall sit upon my throne in my stead, so will I do this day.
31 And Bersabee bowed with her face to the ground, and did obeisance to the king, and said, Let my lord king David live for ever.
32 And king David said, Call me Sadoc the priest, and Nathan the prophet, and Banaeas the son of Jodae: and they came in before the king.

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