“Semper Fi”– the motto of the US Marine Corps– is short for Semper Fideles, which is Latin for “always faithful.” When I googled “faithful” 3 kinds of images popped up– Marines, dogs, and the Old Faithful geyser in Yellowstone National Park.
But fidelity is one of the hallmarks of God, and one of the most-mentioned qualities about God in the Bible. (Google “how many times is faithful mentioned in the Bible” and you’ll see ranges from 227 to 528, depending on word form and translation.
Nowhere, I think, is faithfulness more expected and necessary than in a Christian marriage. And if we are Christians, we have the Holy Spirit living in us, providing faithfulness as one of His gifts. Pop on over to A Biblical Marriage and read more about having a Fruitful Marriage!