Venerable Fulton Sheen
“The blood of the paschal lamb, sprinkled on doorposts to preserve the Jews from destruction, was a sign not yet of a reality, but a figure of the blood of Christ sprinkled on our souls, which would save us from evil. Because the paschal lamb was a figure of Christ, it was on the feast of the Passover that Our Blessed Lord gave to His Church the Eucharist which He had promised over a year before at Capharnaum.”
Source: Ven. Fulton Sheen, These are the Sacraments