It still requires explanation, the phrase "for this, the beloved praised," as it mentions several good deeds that Hashem did for us, such as "signs and wonders in the land of the sons of Ham," "smiting in His wrath all the firstborn of Egypt," "You killed all their firstborn and redeemed Your firstborn Israel." If so, it should say "for these, the beloved praised." What is meant by "for this," which implies that they praised for one specific and unique thing?