Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
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Isaiah 58:13

“If you turn away your foot from the Sabbath, from doing your pleasure on my holy day, and call the Sabbath a delight, and the holy of Yahweh honorable, and honor it, not doing your own ways, nor finding your own pleasure, nor speaking your own words,

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