Answer: catechize

AnswerCrossword Clue
CATECHIZEQuestion closely
CATECHIZEQuestion thoroughly
catechizeInstruct (someone) in the principles of Christian religion by means of question and answer, typically by using a catechism
catechizeto instruct in the catechism
catechizeto question closely.
catechizePut questions to or interrogate (someone)