The First Admonition of St. Francis
The Lord Jesus said to His disciples: "I am the Way, the Truth and the Life; no one comes to the Father except through Me."
"If" you know "Me," you would know "My Father as well; and from now on you shall know Him and have seen Him." "Philip said to Him: Lord, show us the Father, and that suffices for us." · "Jesus said to him: So much time I have been with you, and you do not known Me? Philip, he who sees Me, sees even" My "Father" (Jn 14:6-9).
The Father dwells "in inaccessible light" (cf. 1 Tm 6:16), and "God is spirit" (Jn 4:24), and "no one ever sees God" (Jn 1:18).
For this reason He cannot be seen except in spirit, "since it is the spirit which vivifies, the flesh is good for nothing" (Jn 6:64).
But neither does the Son in that, which He is equal to the Father, seem to anyone to be otherwise than the Father, otherwise than the Holy Spirit.
Whence all who saw the Lord Jesus according to the Humanity and both did not see and believe according to the spirit and the Divinity, that He Himself is the true Son of God, have been damned; so even now all who see the Sacrament, which is sanctified by the words of the Lord upon the altar by the hand of the priest in the form of bread and wine, and do not see and believe according to the spirit and the Divinity, that this is truly the Most Holy Body and Blood of Our Lord Jesus Christ, have been damned, since the Most High Himself testifies, who said: "This is My Body and" My "Blood of the New Testament [which is poured forth on behalf of the many]" (Mt 14:22,24); and "He who eats" My Flesh "and drinks" My Blood, "has life eternal" (cf. Jn 6:55).
Whence of the Spirit of the Lord, who dwells in His faithful, is he who receives the Most Holy Body and Blood of the Lord. · All others, who do not share this same Spirit and presume to receive Him, eat "and" drink "judgement upon themselves" (cf. 1 Cor. 11:29).
Whence: "Sons of men, how long with a heavy heart?" (Ps 4:3) · Why is it that do you not know the truth and believe "in the Son of God?" (cf. Jn 9:35) · Behold, every day He humbles Himself (cf. Phil 2:8), just as when "from royal thrones" (Wis 18:15) He came into the womb of the Virgin; · every day He comes to us Himself humbly appearing; everyday He descends from the bosom of the Father upon the altar in the hands of the priest.
And just as to the holy Apostles in true flesh, so even now He shows Himself to us in the Sacred Bread.
And just as when they gazed at His very own flesh they saw only His flesh, but contemplating with spiritual eyes believed Him to be God, so we too seeing bread and wine with bodily eyes, are to see and firmly believe, that they are His Most Holy Body and Blood, living and true.
And in such a manner the Lord is always with His faithful, just as He Himself says: "Behold I am with you even to the consummation of the age" (cf. Mt 28:20).