Summary: To remind followers of Christ of the important role that enthusiasm plays in their witness.
9 Love must be sincere. Hate what is evil; cling to what is good.
10 Be devoted to one another in brotherly love. Honor one another above yourselves.
11 Never be lacking in zeal, but keep your spiritual fervor, serving the Lord.
12 Be joyful in hope, patient in affliction, faithful in prayer.
Former Secretary of Defense, Melvin Laird, has called the Polaris Submarine a “priceless asset” in the Cuban Missile Crisis. The man responsible for the development of the Polaris was Rear Admiral William Raborn, Jr. He carefully recruited his top management personnel. When they came on the job he would give them and their families a patriotic pep talk on the importance of their assignments. On those occasions when it appeared that someone was not doing his best, he would call him into his office for what he termed, “rededication.” One officer, recalling one of those emotional sessions, said, “When I walked out, I knew I was ready to die for someone. I didn’t know whether it was for the admiral, the president, my mother, or the head of the Boy Scouts, but brother, I was ready to die if necessary!”
Now that’s what I call enthusiasm! Enthusiasm has been defined as “energy that boils over and runs down the side of the pot.”
One of the exciting characteristics of the New Testament Church was that they really enjoyed what they were doing and did it with fervor. But just in case they needed reminding, Paul exhorts them here in Romans 9:11 (quickview)  to never be lacking in zeal, but keep your spiritual fervor.
This is what I call “Godly enthusiasm.” As a matter of fact, the word enthusiasm comes from two Greek words, en (in) and thous (God). One who is enthusiastic is “in God.”
ENTHUSIASM IS A FRAGILE THING. It can be destroyed very easily. In his book, Spirit of St. Louis, Charles Lindbergh recounts the trip home from his solo trans-Atlantic flight. After several days on board ship, he went up on the bridge during a severe storm. He watched it for a while and then said, “I didn’t know the sea was so big. I didn’t know it was so vast. If anyone had told me I wouldn’t have tried it.”
Vince Lombardi: “If you aren’t fired with enthusiasm, you will be fired with enthusiasm.”
ENTHUSIASM, that certain something that makes us great—that pulls us out of the mediocre and commonplace—that builds into us power. It glows and shines—it lights up our faces—
ENTHUSIASM, the keynote that makes us sing and makes men sing with us.
ENTHUSIASM—the maker of friends—the maker of smiles—the producer of confidence. It cries to the world, “I’ve got what it takes.”
ENTHUSIASM—the inspiration that makes us “wake up and live.” It puts spring in our step—spring in our hearts—a twinkle in our eyes and gives us confidence in ourselves and our fellow men.
ENTHUSIASM—it changes a dead pan salesman to a producer—a pessimist to an optimist—a loafer to a go-getter.
ENTHUSIASM—If we have it, we should thank God for it. If we don’t have it, then we should get down on our knees and pray for it.
EVERY PERSON GETS EXCITED AT TIMES…some for 30 minutes, some for 30 days, and some perpetually. Enthusiasm immediately captures the attention of others. Why? Because it glows. It radiates. It shines. It permeates.