Heidelberg Q76

What is it then to eat the crucified body, and drink the shed blood of Christ? It is not only to embrace with believing heart all the sufferings and death of Christ, and thereby to obtain the pardon of sin, and life eternal; but also, besides that, to become more and more united to his sacred body, by the Holy Ghost, who dwells both in Christ and in us; so that we, though Christ is in heaven, and we on earth, are nevertheless flesh of his flesh, and bone of his bone.