I am told that on occasion when a missionary in training feels that the Spanish he is called upon to master appears overwhelming or just too hard to learn, he is placed during the luncheon break next to missionaries studying the complex languages of the Orient. He listens. Suddenly Spanish becomes not too overpowering, and he eagerly returns to his study.
There is one language, however, that is understood by each missionary: the language of the Spirit. It is not learned from textbooks written by men of letters, nor is it acquired through reading and memorization. The language of the Spirit comes to him who seeks with all his heart to know God and to keep His divine commandments. Proficiency in this language permits one to breach barriers, overcome obstacles, and touch the human heart. – Thomas S. Monson, “The Spirit Giveth Light,” Ensign (CR) May 1985