21 And Jehovah went on to say to Moses: “After you have gone and returned to Egypt see that YOU men actually perform all the miracles that I have put in your hand before Pharʹaoh.+ As for me, I shall let his heart become obstinate;*+ and he will not send the people away.+

4 So I shall indeed let Pharʹaoh’s heart become obstinate,+ and he will certainly chase after them and I shall get glory for myself by means of Pharʹaoh and all his military forces;+ and the Egyptians will certainly know that I am Jehovah.”+ Accordingly they did just that.

18 So, then, upon whom he wishes he has mercy,+ but whom he wishes he lets become obstinate.+