And the Egyptians shall know that I am the Lord
Jehovah, the one only true and living God; this they should know by the judgments executed upon them, and be obliged to acknowledge it:
when I stretch forth mine hand upon Egypt:
especially the last time, to destroy the firstborn:
and bring out the children of Israel from among them;
by which it would appear that he was mightier than they, and obtained the end for which the plagues were inflicted on them.
The Brenton translation of the Septuagint is in the public domain.