D. Does a fig tree produce olives?—v. 12a. The Bible says that by our fruits people will know us—Matthew 7:20. E. Does a fountain have fresh and salt water?—v. 12b. You cannot use the tongue in the wrong ways and be a Christian—James 1:26. What about your tongue? Does your tongue bring honor and glory to God? Do you use your tongue to praise God? Do you use your tongue to praise the work of the church, or do you criticize the church? Do you use your tongue to encourage and help others, or to condemn