‘Glory’ was a characteristic theme in apocalyptic thought where it was closely associated with heavenly existence as it is also in Paul’s writings. The future manifestation in glory predicted here (Col 3:4) for the believer has particular reference to his sharing Christ’s likeness (cf. 1 John 3:2, ‘we know that when he appears, we shall be like him, for we shall see him as he is’), and to receiving the glorious resurrection body. - O'Brien