John 19:26

So, when Jesus saw His mother standing beside the disciple He loved [i.e., probably the apostle John], He said to her, "[My dear] woman, look, [here is] your son!"

John 13:23

One of Jesus' disciples, [the one] He loved [Note: Probably this was the apostle John] was reclining at the dinner table close to Jesus.

John 2:4

So, Jesus said to her, "[My dear] woman, what do you want me to do [about it]? My time [i.e., to be revealed to people as the Messiah] has not yet come."

John 20:2

So, she ran and came to Simon Peter and to the other disciple, whom Jesus loved [i.e., probably the apostle John], and said to them, "They have taken the Lord out of the tomb and we do not know where they have put Him."

John 21:7

So, that disciple whom Jesus loved [i.e., probably the apostle John] said to Peter, "It is the Lord!" When Simon Peter heard it was the Lord, he wrapped his outer robe around him, (for he [had taken it off and] was wearing only his underclothing) and jumped into the lake.

John 21:20

Peter turned around and saw the disciple whom Jesus loved [i.e., probably the apostle John] following [along behind him]. This was the same disciple who had leaned over close to Jesus at the [Passover] meal and asked Him, "Lord, who is it that will turn you over [to the Jewish authorities]?"

John 21:24

This is the disciple who is giving testimony about these things and has written them down, and we know his testimony is true.

Treasury of Scripture Knowledge

Summary

When Jesus therefore saw his mother, and the disciple standing by, whom he loved, he saith unto his mother, Woman, behold thy son!

Bible References

Whom

John 13:23
One of Jesus' disciples, [the one] He loved [Note: Probably this was the apostle John] was reclining at the dinner table close to Jesus.
John 20:2
So, she ran and came to Simon Peter and to the other disciple, whom Jesus loved [i.e., probably the apostle John], and said to them, "They have taken the Lord out of the tomb and we do not know where they have put Him."
John 21:7
So, that disciple whom Jesus loved [i.e., probably the apostle John] said to Peter, "It is the Lord!" When Simon Peter heard it was the Lord, he wrapped his outer robe around him, (for he [had taken it off and] was wearing only his underclothing) and jumped into the lake.