In Romans 1, the Apostle Paul writes: "I am not ashamed of the gospel, for it is the power of God for salvation to everyone who believes."
That's what the gospel is, in our experience: the power of God for salvation.
But as you begin to consciously live in such a way that you're seeking to bring all of your conduct in all areas of your life "in step with the truth of the gospel" (Galatians 2.14), you begin to realize more & more that the gospel is not merely the power of God for salvation.
The gospel is also the power of God for... marriage... for parenting... for being the church well... for leadership... for following... for serving... for being a friend... for participating in the world of sports well & wisely... for pursuing your vocation well... for loving your neighbor... for worship... for healthy intimacy of any sort... for repenting... for forgiving... for living well... for dying well... for godly sexuality... for joy in the midst of trial... for lamenting our griefs with holiness... for humility... for honesty in communication... for gratitude... for understanding the news... for dealing with enemies well... for processing life decisions... for praying... for stewarding money wisely... for godly leisure... for eating and drinking... for treating people—all people, even those very different from you—with dignity... for growing in wisdom and knowledge... for honoring your family... for obeying God... for understanding history... for honorably & rightly pursuing any & every human activity under the sun!
It's the gospel's unique ability to renew us every morning (even every moment!) that enables us to set our heart, mind, and hands to the task before us (whatever it may be) with true knowledge of who we are & true knowledge of who God is.
If the gospel isn't continually revitalizing you, you will inevitably—as an unruly child of Adam—begin to corrupt and defile whatever it is you're doing.
And when that happens, you need the power of God to make things right.
"Now I would remind you, brothers, of the gospel I preached to you, which you received, in which you stand, and by which you are being saved, if you hold fast to the word I preached to you—unless you believed in vain. For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures, that he was buried, that he was raised on the third day in accordance with the Scriptures."
1 Corinthians 15