Sorry, no cigar!
Receiving blessings by blessing Israel is not a path to salvation. The covenant must be held, that was the path to all.
The covenant is a promise to observe Torah.
Who were the covenants made with? They were between ____ & _____. Fill in the blanks. ERGO, the only way a Gentile could be saved was what? To be a part of the covenant promises. And how would he be part of the covenant promises? He either had to go through Israel and become a proselyte, bless Israel, or become God. We KNOW #3 is out (don’t we??). That leaves one or two. Or BOTH. C’mon, editor. Put on yer thinkin’ cap here.