Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX2012

1 Samuel 15:3

And now go, and you shall strike Amalec and Hierim and all that belongs to him, and you shall not save anything of him alive, but you shall utterly destroy him: and you shall devote him and all his to [destruction], and you shall spare nothing belonging to him; and you shall kill both man and woman, and infant and suckling, and calf and sheep, and camel and ass.

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