Who was the well-known church father that said something like: "Go into all the world and preach the Gospel, and when necessary use words" (St Francis Assisi)? I'm sure he didn't mean this to be absolute, because words are definitely needed. But I do know the power of what he inferred. A teacher effectively communicates a little by what is SAID, a little more by what is DONE, and mostly by who (s)he IS! So it is also true of Christians, and doubly so when the teacher is a Christian. I taught in an inner-city public school district for 3 decades and was not allowed to speak the Gospel. However, I strongly lived Truth every day in my interactions with students in encouraging them to respect and honor each other as I did them. In coming to my classroom, I wanted all students to experience the difference between dark and light--between an unsaved teacher and a saved teacher. For many students, my classroom was their sole time of security, comfort, and success. In my entire public school career, God only gave me a few glimpses into the spiritual world of whether or not I was an effective witness for Him. Here's one of them. A 4th grade student walked up to me in the hall one day and said, "Can I ask you a question?" "Sure!" I replied, "If I don't know the answer, I'll get it for you." He simply asked, "Do you love God?" After a moment of stuttering to regaining my composure, I said, "May I ask you a question? What ever made you ask me that question!?" And just as matter-of-factly, he replied as he turned to walk back to his classroom, "I CAN TELL!" I realized then the power of living the Gospel. I also realized there are two things in this world that you cannot fool--they both see straight through you--one is a dog and the other is a child! Moral of the story: "Your life is a sheet of clear glass--everything had better agree!"