3:9​—What is the “pure language,” and how is it spoken? It is the truth of God found in his Word, the Bible. It includes all Bible teachings. We speak it by believing the truth, by correctly teaching it to others, and by living in harmony with God’s will.

3:8, 9. As we await the day of Jehovah, we prepare for survival by learning to speak the “pure language” and by ‘calling upon God’s name’ by making a personal dedication to him. We also serve Jehovah “shoulder to shoulder” in association with his people and offer him “a sacrifice of praise” as a gift.​—Hebrews 13:15.