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

Amos 9:1

I saw the Lord standing on the altar: and he said, Smite the mercy-seat, and the porch shall be shaken: and cut through into the heads of all; and I will slay the remnant of them with the sword: no one of them fleeing shall escape, and no one of them striving to save himself shall be delivered.

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