300 C.E. – 339 C.E. Eusebius of Caesarea

Passover: De sollemnitate Paschali

It would perhaps not be inappropriate here again to discuss the Pascha, which was handed down long ago to the children of the Hebrews as an image. Now then, when the Hebrews first used to celebrate the festival of Pascha, they would take for themselves a young domestic animal (this was a lamb or a sheep).

“This one bears our sins, and suffers pain on our behalf.”

“But no one would dispute the fact the the sacred Gospel-writers reported that the Savior’s passion took place during the days of the Jewish Pascha of the Unleavened Bread.

Source:  Tertullian