The Lord said Or rather, had said, for this and the next verse are only a recapitulation of what had been revealed to Moses in mount Horeb, (Exodus 3:20-22, and Exodus 4:23,) and, together with the third verse, ought to be read as a parenthesis. Accordingly, it is evident that the 4th verse is a continuation of Moses's conference with Pharaoh, mentioned in the preceding chapter. He shall thrust you out hence altogether Men, and women, and children, and cattle, and all that you have, which he would never do before.
Related Commentaries of Exodus 11:1
Exodus 11:1
1 And the LORD said unto Moses, Yet will I bring one plague more upon Pharaoh, and upon Egypt; afterwards he will let you go hence: when he shall let you go, he shall surely thrust you out hence altogether.