CHRIST IS ENTIRELY PRESENT IN EVERY PARTICLE OF THE CONSECRATED HOST, THEREFORE LET’S AVOID RECEIVING COMMUNION ON THE HAND

"Just like the sun cannot be divided, neither can God and Man be separated (that is, Christ, true God and true Man, cannot be divided) in the whiteness of the Holy Host. Let us suppose that the Sacred Host could be divided: even if it would be possible to fragment the Holy Eucharist into thousands of tiny Particles, in each one of the tiny Particles there is the presence of Christ, the whole God and the whole Man (that is, the whole Christ with His Body, Blood, Soul and Divinity). In the same manner that a mirror would shatter into thousands of pieces, the Sacred Host will not shatter or divide the image of God and Man that you see in the Host; the image of God and Man is in each fragmented part."

Saint Catherine of Siena