Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
KJV

1 Kings 20:13

And, behold, there came a prophet unto Ahab king of Israel, saying, Thus saith the Lord, Hast thou seen all this great multitude? behold, I will deliver it into thine hand this day; and thou shalt know that I am the Lord.

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