John Gill Commentary Deuteronomy 26:8

"and Jehovah brought us forth out of Egypt with a mighty hand, and with an outstretched arm, and with great terribleness, and with signs, and with wonders;" — Deuteronomy 26:8 (ASV)

And the Lord brought us forth out of Egypt
After some time:

with a mighty hand and with an outstretched arm ;
by his almighty power, of which full proof was given by what he then did, (Deuteronomy 5:15) ;

and with great terribleness :
to Pharaoh and his people, through the plagues that were inflicted on them, especially the last, the slaying of their firstborn; see (Deuteronomy 4:34) ;

and with signs and with wonders ;
wrought by the hands of Moses and Aaron, meaning the ten plagues, often so called.