14. Resolved, never to do anything out of revenge.
Our God said, "Vengeance is mine, I will repay (or revenge)." I must remember God's promise that He will repay and make all things right, and trust in that promise. Not a word of all His promises has failed come true. Why should I now doubt Him?
15. Resolved, never to suffer the least motions of anger to irrational beings.
As fallen sinners, we can feel angry and react in a selfish and sinful way when we are dealt with someone or something that didn't intend to harm us. If we are indeed a believer in the gospel of grace, we ought to live graciously, and that will eliminate us from reacting badly to every thing that we suffer (even if it is a real suffering).