Admittedly, pinning the term religion against the gospel isn’t entirely fair. There are many things that can be done religiously in a very good and God-glorifying way!  Religion that is “pure” can be practiced (See James 1:26-27). Not to mention the fact that Christianity IS by definition a religion. BUT, you and I can’t make our way to God on our own, no matter how hard we try, and when we attempt that we, by our actions have pinned religion agains the Gospel. I’ve found the following by Tim Keller to be a good heart check as to wether or not I am Christ-centered or merely religious.