Thy cousin Elizabeth ... - The case of Elizabeth is mentioned to inspire Mary with confidence, and to assure her that what was now promised would be fulfilled. It was almost as improbable that Elizabeth should have a child at her time of life, as it was that Mary should under the circumstances promised.
Related Commentaries of Luke 1:36
Luke 1:36-37
36 And, behold, thy cousin Elisabeth, she hath also conceived a son in her old age: and this is the sixth month with her, who was called barren.
37 For with God nothing shall be impossible.