he will let # 02_EXO_03_20 # And I will stretch out my hand, and smite Egypt with all my wonders which I will do in the midst thereof: and after that he will let you go. 
he will let # 02_EXO_11_01 # 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.