Jesus entrusted his mother to John’s care.

John 19:25-27

25 Near the cross where they had nailed Jesus stood his mother, his mother’s sister, Mary the wife of Clopas, and another Mary, the woman from Magdala village. 26 Jesus saw his mother standing there. He also saw me standing nearby. Then he said to his mother, “This man will now be like your son.” 27 And he said to me, “Treat this woman as [MET] your mother.” So from that time I took her to my home and took care of her.