Jeremiah 11:5

“So I have come down to deliver them from the hand of the Egyptians and to bring them up from that land to a good and spacious land, to a land flowing with milk and honey, to the place of the Canaanite and the Hittite and the Amorite and the Perizzite and the Hivite and the Jebusite.

and the prophet Jeremiah said, “Amen! May Yahweh do so; may Yahweh establish your words which you have prophesied to return the vessels of the house of Yahweh and all the exiles, from Babylon to this place.

and gave them this land, which You swore to their fathers to give them, a land flowing with milk and honey.

Otherwise if you bless in the spirit only, how will the one who fills the place of the uninformed say the “Amen” at your giving of thanks, since he does not know what you are saying?