Jamieson, Fausset & Brown

Then said Martha . . . Lord, if thou hadst been here, my brother had not died--As Mary afterwards said the same thing (Joh 11:32), it is plain they had made this very natural remark to each other, perhaps many times during these four sad days, and not without having their confidence in His love at times overclouded. Such trials of faith, however, are not peculiar to them.