“Mary will from this moment on step back as his mother and uniquely reflect the image of the community that remains behind on earth. The disciple whom Jesus loves no less significantly represents those whom Jesus has bound to himself from the beginning to be his witnesses and to continue his work on earth. . . . It is in this light that we must view Jesus’ final statements to these two and the words with which the Evangelist concludes this passage: ‘And from that hour the disciple took her into his own home.’ This is not merely a historical note pertaining to Mary’s place of residence after Jesus’ death but a salvation-historical reference—in the manner of the Fourth Gospel—to the new ‘family of God’ that from that hour took form as a result of Jesus’ final testamentary disposition.”
(Herman Ridderbos, The Gospel of John: A Theological Commentary, pp. 613-614.)
Wednesday evening Bible study at Trinity Presbyterian Church, OPC, focuses on John 19.