Mwanzo 18:10

Kisha Bwana akasema, “Hakika nitakurudia tena majira kama haya mwakani na Sara mkeo atakuwa ana mwana.” Sara alikuwa akiwasikiliza kwenye ingilio la hema, lililokuwa nyuma yake.

And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard it in the tent door, which was behind him.