Easter in the Bible is a pagan term. Pesach (Hebrew) in english is Passover, Easter is Ishtar, (Semiramis, widow of Nimrod, mother of Tammuz) the name of the bare breasted pagan fertility goddess of the east who came out of heaven in a giant egg, landing in the Euphrates river at sunrise on the first Sunday after the veral equinox, busting out turning a bird into an egg laying rabbit. After that point in time the priest of Easter would sacrifice infants and then take the eggs of Easter and die them in the blood of the sacrificed infants. These eggs would hatch on December 25th and that is where that pagan Holy Day comes from.
This YABS scripture uses Pesach (Passover) for ACTS 12:4