1. “Be At Peace Among Yourselves”
“12: And we beseech you, brethren, to know them which labour among you, and are over you in the Lord, and admonish you; 13: And to esteem them very highly in love for their work's sake. And be at peace among yourselves” (I Thes. 5).
Introduction: Anytime you have a group of people (local church), there is the potential for people problems. Biblical peace, be it known, is never to be experienced at the expense of the truth (cp. Eph. 4: 3-6). What is stated in I Thessalonians 5: 13 is essentially the positive way of saying what is enjoined in I Corinthians 1: 10. Christians have a command to in general live peaceably (Rom. 12: 18).

2. “Be At Peace Among Yourselves”
Dos
Don’ts
Love as motivation
Do not be envious
Be kind/courteous
Do not be argumentative
Seek best for others
Put self first
Be a peacemaker
Charge without proof
Comment: I shall briefly supply below some scripture references for each point.
Love as motivation: Gal. 5: 13, 14, I Cor. 13: 4-7; / do not be envious: Gal. 5: 26, Phili. 2: 3.
Be kind and courteous: I Pet. 3: 8, 9 / Argumentativeness: Present a word study on “reviler” or “railer” found in I Cor. 6: 10 and 5: 11 (“…a man of course, harsh and bitter words, abuse others, vilify their character, wound their feelings,” Barnes notes.
Seek the best for others: Biblical love so requires (cp. John 3: 16) / put self first, don’ts: Rom. 12: 10.
Be a peacemaker: Matt. 5: 9 / Charge without proof: I Thes. 5: 21, Deut. 17: 6, 19: 15, Matt. 18: 16, 2 Cor. 13: 1.
Love the truth: 2 Thes. 2: 10-12, I Cor. 1: 10 / Do not be a clique member: I Cor. 1: (too many in local churches).
Love the truth
Be a clique member