Is it permissible for common people to debate the People of the Book, especially Christians, and is there a fear for those who are not skilled in refuting them from reading their writings and specious arguments?

It is not permissible to speak about the religion of Allah without knowledge. This is particularly emphasized concerning the fundamentals of religion and issues of faith and disbelief, especially when engaging in dialogue with non-Muslims. Knowledge must be accompanied by forbearance and good manners, choosing gentle words and beautiful meanings, in compliance with the words of Allah Almighty: "Invite to the way of your Lord with wisdom and good counsel, and argue with them in the best manner," and His prohibition against arguing with the People of the Book except in the best manner.