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

Zechariah 3:4

And [the Lord] answered and spoke to those who stood before him, saying, Take away the filthy raiment from him: and he said to him, Behold, I have taken away thine iniquities: and clothe ye him with a long robe,

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