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

Exodus 11:10

And Moses and Aaron wrought all these signs and wonders in the land [of] Egypt before Pharao; and the Lord hardened the heart of Pharao, and he did not hearken to send forth the children of Israel out of the land of Egypt.

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