The motto Novus ordo seclorum was translated and added to the seal by Charles Thomson, a Latin expert who was involved in the design of the Great Seal, as "A new order of the ages." Thomson said it was to signify "the beginning of the new American Era" as of the date of the Declaration of Independence.

I dunno, sounds very America-First to me.

Medieval Christians read Virgil's poem as a prophecy of the coming of Christ. The Augustan Age, although pre-Christian, was viewed as a golden age preparing the world for the coming of Christ. The great poets of this age were viewed as a source of revelation and light upon the Christian mysteries to come.