John 19:26

When Jesus therefore saw his mother, and the disciple standing by whom he loved, he said unto his mother, Woman, behold thy son! Then saith he to the disciple, Behold thy, mother! And from that hour the disciple took her into his own home.

This is one of the seven utterances from the cross; and, as Westcott observed, the seven make an entire sequence in their own right and deserve treatment together. For a detailed discussion of all seven, see my Commentary on Matthew, Matthew 27:66. This is the third in the chronological sequence of the seven utterances.

From that hour ... is not a statement that within sixty minutes John took Mary to his own home, but means rather that from the authority conveyed in that hour the future residence of the blessed Mary was with the beloved John.

Significantly, Jesus did not here address his mother as "Mother of God," a title which developed long afterward; and regardless of the intentions of the people using it, it is unscriptural: inappropriate, and, in a sense, even idolatrous.