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

2 Chronicles 6:21

And thou shalt hear the supplication of thy servant, and of thy people Israel, whatsoever prayers they shall make towards this place: and thou shalt hearken in thy dwelling-place out of heaven, yea thou shalt hear, and be merciful.

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