Luke 1:36
Even Elizabeth your relative is going to have a child in her old age, and she who was said to be unable to conceive is in her sixth month — the confirmation sign offered to Mary (not demanded) is Elizabeth's own miraculous pregnancy. The relative relationship between Mary and Elizabeth is mentioned here for the first and only time — Luke does not specify the exact relationship (cousin is traditional). The sixth month establishes the chronological marker: Mary will visit Elizabeth and find her visibly pregnant.