“Now is the time,” He no less significantly remarks in another of these Tablets, “for you to divest yourselves of the garment of attachment to this world that perisheth, to be wholly severed from the physical world, become heavenly angels, and travel to these countries. I swear by Him besides Whom there is none other God that each one of you will become an Isráfíl of Life, and will blow the Breath of Life into the souls of others.” And lastly this glorious promise in another of those immortal Tablets: “Should success crown your enterprise, America will assuredly evolve into a center from which waves of spiritual power will emanate, and the throne of the Kingdom of God, will, in the plenitude of its majesty and glory, be firmly established.”

'Abdu'l-Bahá cited by Shoghi Effendi
(Citadel of Faith)
www.bahai.org/r/627098777