The festival that early Christians celebrated was called in Greek Πάσχα (Pascha), a transliteration of the Aramaic word פסחא, cognate to Hebrew פֶּסַח (Pesach). The word originally designated the Passover feast of Exodus 12.

Why is Easter called Pascha?

In Latin and Greek, the Christian celebration was, and still is, called Pascha (Greek: Πάσχα), a word derived from Aramaic פסחא (Paskha), cognate to Hebrew פֶּסַח (Pesach). The word originally denoted the Jewish festival known in English as Passover, commemorating the Jewish Exodus from slavery in Egypt.

What means Pascha?

'Pace' was a northern word meaning 'Easter'; it derived from the Latin 'pascha',' meaning 'Passover, Easter', ultimately from Hebrew 'pesah', 'Passover'.