How careful we must be not to defile them!

"You shall make yourself judges and officers in all the gates that Hashem your G-d gives you..." Deuteronomy 16:18
3 organs were specially designed for Torah study: Eyes for reading the written Torah, Ears for hearing the Oral Law, and Mouth for learning both aloud. Since Torah study will ultimately destroy it, the evil inclination works hard to ruin these 3 organs. It tries to get the eyes to see forbidden sights, the ears to hear malicious gossip, and the mouth to speak ill of others,lie,flatter the wicked, ridicule that whice is good, and swear falsely. To protect these organs, G-d created "gates" - eyelids, earlobes, and lips - for us to shut out forbidden things and let in Torah study and prayer!
Od Yosef Hai, Derushim Shoftim