The Hebrew word "glory" literally signifies "weight;" and the Apostle seems to have some allusion to that circumstance by connecting, as he does, the two words together. There is indeed a natural connection between what is weighty and what is solid and substantial. He would thus represent future glory as something solid, lasting, and durable, and therefore utterly distinct from the light, vain trifles of time, and even the passing afflictions of the day or hour.
But he seems chiefly to be alluding to the exceeding greatness of that glory which is to be revealed as compared with our present faculties of body and mind and all our present conceptions. It is as though he should say, "In our present imperfect state, with our limited faculties of mind, and our weak, frail tabernacle, we could not bear the weight of that immortal glory which is prepared for the saints in the realms of bliss." "Eye hath not seen, nor ear heard, neither have entered into the heart of man, the things which God hath prepared for them that love him."
Heaven, with its opening bliss, would crush our present body and soul at once into the dust. "No man," said God to Moses, "can see me and live." When John in Patmos had a view of the glory of his risen Lord, though he had lain in his bosom at the last supper, yet he fell at his feet as dead. Therefore, we must have our soul purified from all stain of sin and expanded to the utmost of its immortal powers, and our body glorified and conformed to the body of the Lord Jesus Christ, that soul and body may alike be able to bear the weight of eternal glory with which they are to be clothed. As the Apostle speaks, "Not for that we would be unclothed, but clothed upon, that mortality might be swallowed up of life."
But there is something in the word "glory" that I must not pass by. The Lord, in that touching chapter, John 17, thus prays, or rather thus expresses his heavenly will, "Father, I will that they also, whom thou hast given me, be with me where I am; that they may behold my glory, which thou hast given me." This is the "weight of glory" that the Apostle speaks of, not merely freedom from sin and sorrow, not merely seeing Christ as he is, but beholding and enjoying that unutterable glory which the Father gave him, which is all the glory of Godhead as revealed in, and shining through his human nature.
The fulness and perfection of this glory is reserved for the saints of God to enjoy when they shall see him as he is, and know even also as they are known. We see a gleam of it when Christ is revealed to the soul; when the heavens are opened to faith; when his beauty and blessedness are manifested to our heart by the power of God. But the "exceeding and eternal weight of glory" can never be fully comprehended in this present life.