couples are often less sexually faithful than married ones. 20% of cohabitating women have cheated on their partners, compared with 4% of married women. 

Faithfulness doesn't "just happen"; it requires a deliberate commitment.

Faithfulness To The Church

When I proudly told my 8-year-old granddaughter I'd been attending Bible class for almost 50 years, she looked at me sympathetically and patted my hand.  "Don't worry, Grandma," she said.  "Maybe this year
you'll pass." -- Marlys Huffman
This is a funny little situation, but those of us who have been walking with the Lord for a long time know that there is always more to know about God and His ways.  In fact those who are faithful in serving the Lord in His Body are the first to tell you that, though God has taught them a lot, they still have so much more to learn.

DVBS - Faithful In The Long Haul

Norman Geisler, as a child, went to a VBS because he was invited by some neighbor children. He went back to the same church for Sunday School classes for 400 Sundays. Each week he was faithfully picked up by a bus driver. Week after week he attended church, but never made a commitment to Christ. Finally, during his senior year in High School, after being picked up for church over 400 times, he did commit his life to Christ. What if that bus driver had given up on Geisler on the 395th trip? What if the bus driver had said, "This kid is going nowhere spiritually, why waste any more time on him."

We don't always know the effect our being faithful in serving the Lord and His Church can have.  Many missionaries have been faithful for many years before seeing the first fruits of the message of the gospel.  This brings us to the subject of faithfulness to proclaim the gospel message.

Faithfulness To Proclaim The Gospel

Charles Spurgeon - Faithful In The Small Things

Charles Spurgeon preached to thousands in London each Lord's Day, yet he started his ministry by passing out tracts and teaching a Sunday school class as a teenager. When he began to give short messages to the Sunday school, God blessed his ministry of the Word. He was invited to preach in out of the way places in the country side, and he used every opportunity to honor the Lord. He was faithful in the small things, and God trusted him with the greater things. "I am perfectly sure," Spurgeon said, "that, if I had not been willing to preach to those small gatherings of people in small country places, I should never have had the privilege of preaching to thousands of men and women in large buildings all over the land. Remember our Lord's rule, "For everyone who exalts himself will be humbled, and he who humbles himself will be exalted."  (Wycliffe Handbook of Preaching & Preachers, W. Wiersbe, p. 221)

Faithfulness with humility towards God and men results in a great harvest as well as God being able to exalt us to a place where He can use us in bigger ways.

Robert Moffat -  Faithful To Preach The Gospel

An elderly preacher was rebuked by one of his deacons one Sunday morning before the service. "Pastor," said the man, "something must be wrong with your preaching and your work. There's been only one person added to the church in a whole year, and he's just a boy."