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

Isaiah 40:9

O you that bring glad tidings to Zion, go up on the high mountain; lift up your voice with strength, you that bring glad tidings to Jerusalem; lift it up, fear not; say to the cities of Juda, Behold your God!

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