Amen

Firm, true. The word is used to denote acceptance (Deut. 27:15–26) or truthfulness (1 Kgs. 1:36). Amen was the proper response of a person to whom an oath was administered (1 Chr. 16:36; Neh. 5:13; 8:6). Christ is called “the Amen, the faithful and true witness” (Rev. 3:14; see also John 14:6; 1 Cor. 14:16; 2 Cor. 1:20).