I'm not interested in a theological history lesson. My statement was broad brush in terms of TOO MUCH GOVERNMENT regardless of religion faith held by someone in the DC crowd.
Congressus is the past participle of the Latin word congregare to "come together."
Origin: 13501400 for earlier sense body of attendants, following; 152030 for current senses; ME < L congressus assembly, intercourse, meeting, equiv. to congred(?) to approach, meet (con- con- + -gred?, comb. form of grad? to step; cf. grade) + -tus suffix of v. action]