And when he had apprehended him, he put him in prison, and delivered him to four quaternions of soldiers to keep him; intending after Easter to bring him forth to the people.[Acts 12:4]
Easter was an Anglo/Saxon word. The old English/Anglo-Saxon language didn’t come about until the mid-5th century. So around 400 years later was the earliest easter became a word.
I know but the KJV was written in the 1600's.