The phrase "denominational lines" refers to the divisions or boundaries that separate different religious groups or sects based on their specific beliefs or practices. Full definition
With Dreher, I believe that the future of Christ's church lies, not with any one denomination or communion, but with Christians across denominational lines who simply undertake to live obediently in gratitude for their salvation. (firstthings.com)
I'm a bit reluctant to bring up the subject of baptism here on the blog because I think it's such a shame that something as beautiful and important can so quickly divide Christians along denominational lines. (rachelheldevans.com)
The attitude toward the operation of divine grace in the physical world seems to be a clue to the Christian's attitude toward art; these attitudes cut across even the most distinct denominational lines. (religion-online.org)