God said, “When I see the blood, I will pass over you.” The blood of Christ is ever before the eye of God. He never fogets it. If God does not ever forget the blood of Christ shed once for ever, He does not wish us to forget it. The Lord Jesus in His boundless grace wishes us to think of Him, to remember Him. Precious manifestation of love for us, that the Saviour should delight in our remembrance of Him, and that He has left us a touching memorial of Himself and His love. Jesus wishes us to think of Him, because He loves us! In the supper we shew forth His death till He comes.
It is important to remark that there is no sacrifice in the present time, and that the Lord is not personally present in the bread and wine. The church of Rome says that the Lord’s supper (or rather the mass, as they call it) is the same sacrifice as that which was accomplished upon the cross. But when the Lord said, ‘This is my body … do this in remembrance of me’ (See Matt 26:26, Mark 14:22, Luke 22:19, 1 Cor 11:24) He was not yet upon the cross. His blood was not yet shed, and when He broke the bread He did not hold Himself in His hands. There is no such thing now as a crucified Christ: He is seated at God’s right hand, and there is no shedding of blood now. It is a blessed fact that there is a sign, a commemoration of this, but that it should be so really and substantially is impossible – there is no such thing as a dead Christ now.
We shew forth in the supper His death and His blood shed for us: but a glorified Christ cannot be a sacrifice; cannot come down from heaven to die; and if the bread be changed into His body, and there be a soul in it, it must be another soul; this is absurd. They say that the Godhead is everywhere, and that the substance of the body is there; but the soul is individual: this lives, feels, loves, is a single individual soul. According to the Roman Catholic teaching, the soul of the Lord Jesus leaves heaven; but it cannot be the same soul, and if it is another, it is absurd. The Lord says in Luke 22:20, ‘This cup is the new covenant in my blood’: — that is, it represents the blood — for the cup itself is not the new covenant. Thus the bread presents to us in the most striking way the body of the Lord crucified upon the cross, and the wine His blood shed for us.
From JND Collected Writings Volume 24 (Expository 3) p317-319 on Mark 14