Mary’s mom must’ve really been a special vessel to have borne such perfection, and so on and thus and so until Eve who was a sinner. Oops.
Rome teaches that a sinless Christ MUST have been born by a Sinless Mother.
However; to be consistant; would not a Sinless Mother herself need to be born of a sinless woman - Jesus’ Gramma??
And Granny’s mom would need to be SINLESS as well...
You see the PROBLEM here?
Like turtles; the OTC needs a succession of sinless ladies all the way bay to the First Eve.
Whoops!