Titus 1:10

Titus 1:10 For there are many who are insubordinate, empty talkers and deceivers, especially those of the circumcision party. 11 They must be silenced, since they are upsetting whole families by teaching for shameful gain what they ought not to teach. 12 One of the Cretans, a prophet of their own, said, “Cretans are always liars, evil beasts, lazy gluttons.” 13 This testimony is true. Therefore rebuke them sharply, that they may be sound in the faith, 14 not devoting themselves to Jewish myths and the commands of people who turn away from the truth.

Truth:

• Paul had some specifics in mind when instructing that elders should instruct and rebuke.
• Various motivations for "teaching what they ought not teach": insubordination, empty talkers, deceivers, shameful gain, devoted to myths, following others who turn away... in some ways, opposite of those qualified to be elder.
• Purpose of the rebuke is that they may be sound in the faith (same purpose as church discipline). Reminds me of Titus 2:15 Declare these things; exhort and rebuke with all authority. Let no one disregard you.
  
• Although these instructions are for Titus, I imagine they are intended for the elders as well. Titus is setting up the elders in every town...

Application:

• Pray for the leaders of the church that they would know the Lord and his word well to do this job.
• Are any of these things true in me: insubordination, empty talkers, deceivers, shameful gain, devoted to myths, following others who turn away?
• Know the word. Be sound in the faith.