The Question and Answer section for Inherit the Wind is a great resource to ask questions, find answers, and discuss the novel.
Drummond rejects Dunlap because he believes in the Bible.
Jesse Dunlap is a farmer and cabinet maker, as well as a prospective juror. Meeker asks Jesse to state his name and occupation, in order to introduce him to the defense and prosecution as a potential juror.
Brady's comment is humorously ironic because his statement would rival a sermon.... a speech would have been shorter.