Rashi on Exodus 6:1/רש"י על שמות ו׳:א׳

1עתה תראה וגו׳ NOW THOU SHALT SEE etc. — You have criticised My methods of guiding the world. You are not like Abraham to whom I said. (Genesis 21:12) “for through Isaac shall seed be raised unto thee” and to whom I afterwards said, (Gen 22:2) “bring him up as a burnt offering”, and yet he did not criticise My ways, therefore, עתה תראה NOW THOU SHALT SEE — what will now be done to Pharaoh thou shalt see, but thou shalt not see what will be done to the kings of the seven nations of Canaan when I shall bring them (the Israelites) into the Holy Land (cf. Sanhedrin 111a).

2כי ביד חזקה ישלחם this means: for on account of My strong hand (i. e. the strong hand which I will use against him, the ב in ביד denoting “on account of”) — which will prove strong against him he will send them away.

3וביד חזקה יגרשם מארצו AND WITH A STRONG HAND SHALL HE DRIVE THEM OUT OF HIS LAND — against the will of the Israelites themselves will he drive them out of his land: they will not have sufficient time to prepare provisions for themselves for the journey. So, indeed, does Scripture state: (Exodus 12:33) “And Egypt was urgent (תחזק. lit., was strong) upon the people etc.”.