NET
28 And when all things are subjected to him, then the Son himself will be subjected to the one who subjected everything to him, so that God may be all in all.
Darby
28 But when all things shall have been brought into subjection to him, then the Son also himself shall be placed in subjection to him who put all things in subjection to him, that God may be all in all.)
KJV
28 And when all things shall be subdued unto him, then shall the Son also himself be subject unto him that put all things under him, that God may be all in all.