Exodus 11:4 - Coke's Commentary on the Holy Bible

And Moses said, &c.— The whole context proves, that Moses said this to Pharaoh before he left his presence. The Samaritan text adds here what we read in the 22nd and 23rd verses of the 4th chapter: and it is most probable, that these words were now used by Moses; as otherwise we read not of their having been delivered at all to Pharaoh, according to God's denunciation. When God says, I will go out into the midst of Egypt, it is generally understood, that he would do so by the ministry of a destroying angel. See 2 Samuel 24:16. Exodus 12:23 comp. with Exodus 12:12 and Amos 5:17.