18. ἐγὼ γάρ εἰμι πρεσβύτης. The emphasis is on the I, which is therefore expressed. So “Abraham fell upon his face, and laughed, and said in his heart, Shall a child be born unto him that is a hundred years old?” Gen 17:17. But he had believed the original promise (Gen 15:6) though he asked for a confirmation of it (Luk 1:8). “He believed … God who quickeneth the dead,” Rom 4:17.