In "The Crucible" when did Giles Corey start attending church?

Expert Answers
mrs-campbell eNotes educator| Certified Educator

The answer to this one can be found in Act One, not in the actual dialogue of the play, but in the inserted background information that Miller provides.  After Giles talks to Reverend Hale about his wife, and how she has been reading "strange books," and how when she does, he can't pray, Miller steps in to provide some information.  He states that it probably wasn't too strange that Giles couldn't pray, because

"only in his last years--after he had married Martha--did he bother much with the church...he'd only recently learned any prayers, and it didn't take much to make him stumble over them."

Corey, who is in his eighties when we met him, hadn't really ever gone to church until he had recently married Martha.  Martha was a pious, church-going woman, so Giles tried to convert and go with her.  But it was all new to him, and so he had a hard time remembering the prayers, and was still very rough around the edges.  Church was a recent thing, in the last few years for him.  I hope that helped; good luck!