When Jesus saw his mother and the disciple whom he loved standing beside her, he said to his mother, “Woman, here is your son.” Then he said to the disciple, “Here is your mother.” And from that hour the disciple took her into his own home. - John 19:26-27
Tim Staples, Scott Hahn and E. W. Hengstenberg all point to John 19:26-27 as a defense for our blessed mother Mary’s perpetual virginity saying: the Jewish law says the next eldest sibling would have had to take responsibility for the widow, therefore if there was a available brother (another son of Mary) Jesus in giving Mary to st. John would have broken the law.
I’ve been looking all over but I can’t find this law in the old testament. Where does it say a widow is under the responsibility of the eldest son if there are no brothers of the deceased husband to get married to?
P.S: through praying about the matter, I was guided to Ruth who married Mahlon who took care of his mother after her husband, his father died. This doesn’t prove the point about the law but it does show a son taking care of his widowed mother