SCRIPTURE COMMENTARY #626
Jesus saith to her: "Do not touch me: for I am not yet ascended to my Father. But go to my brethren and say to them: I ascend to my Father and to your Father, to my God and to your God." (John 20:17)
WE ARE THE BRETHREN OF JESUS AND THE CHILDREN OF GOD: Our Blessed Lord called His disciples His "brethren," and said, moreover, to them: "I ascend to My Father and to your Father." God the Father, who is, by nature and from eternity, the Father of Jesus Christ, by the atoning death of His Son, becomes our Father as well. For the sake of His beloved Son, Jesus, He has admitted us to the grace of sonship and to be the brethren of, and "heirs with," Jesus.
[From 'A Practical Commentary on Holy Scripture' by Bishop Knecht, D.D.]
(1899 Douay-Rheims Bible)