Don't quench the Spirit.
Regarding quenching the Spirit: The reference here is most certainly to the earnest of the Holy Spirit given to every Christian upon his obedience to the gospel of Christ (Acts 2:38f and  Ephesians 1:13).  Just as fire may be smothered by an element such as earth or water, so the spirit of God may be quenched in people's hearts by things which the Spirit cannot abide.  The cares, riches and pleasures of life choke out the word and quench the Spirit.  The blessed fire can be put out by the cold drizzle of worldliness, by the heavy blanket of selfishness, or by the companionship of evil people.  The negligent student of the holy scriptures can let the fire go out.  The stormy winds of false doctrine can blow it out!