Jeremiah 28:6

in order to establish the oath which I swore to your fathers, to give them a land flowing with milk and honey, as it is this day.”’” Then I answered and said, “Amen, O Yahweh.”

“Take an offering from the exiles, from Heldai, Tobijah, and Jedaiah; and you come the same day and come into the house of Josiah the son of Zephaniah, where they have come from Babylon.

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?