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

Isaiah 30:29

Must you⌃ always rejoice, and go into my holy places continually, as they that keep a feast? and must you⌃ go with a pipe, as those that rejoice, into the mountain of the Lord, to the God of Israel?

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