John 20:17

Jesus saith unto her, Touch me not, for I am not yet ascended to my Father--Old familiarities must now give place to new and more awful yet sweeter approaches; but for these the time has not come yet. This seems the spirit, at least, of these mysterious words, on which much difference of opinion has obtained, and not much that is satisfactory said. but go to my brethren--(Compare Mat 28:10; Heb 2:11, Heb 2:17). That He had still our Humanity, and therefore "is not ashamed to call us brethren," is indeed grandly evidenced by these words. But it is worthy of most reverential notice, that we nowhere read of anyone who presumed to call Him Brother. "My brethren: Blessed Jesus, who are these? Were they not Thy followers? yea, Thy forsakers? How dost Thou raise these titles with Thyself! At first they were Thy servants; then disciples; a little before Thy death, they were Thy friends; now, after Thy resurrection, they were Thy brethren. But oh, mercy without measure! how wilt Thou, how canst Thou call them brethren whom, in Thy last parting, Thou foundest fugitives? Did they not run from Thee? Did not one of them rather leave his inmost coat behind him than not be quit of Thee? And yet Thou sayest, 'Go, tell My brethren! It is not in the power of the sins of our infirmity to unbrother us'" [BISHOP HALL].

— Jamieson-Fausset-Brown Commentary (public domain)