[Little Ray]

Found it/
He is saying “vow with a Faith”

Definition of fegs
chiefly Scottish
: faith —used interjectionally to express surprise or as a mild invocation

[mairdie]

THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU! THANK YOU!

[mairdie]

http://www.henrylivingston.com/writing/poetry/beekman.htm

Thanks added on the poetry page. Let me know if you want a different attribution. Mary

[T-Bone Texan]

That was good scholarship on your part!