Settling every Bible based question or studying every Bible based topic can hardly be resolved with a single verse every time, but there are times when a single verse is so clear and concise in what is being said, the point cannot be missed by any honest Bible student.
For example, take the question and topic of denominationalism and whether or not God approves of such behavior. If we’re looking for a straight answer the Bible provides one! It doesn’t matter how we feel about the restoration movement, the reformation effort, the evangelical community church push, or any other small or large-scale religious body … if you think there is godly wisdom in being able to “choose the church of your choice” think again. Denominationalism is against the will of the Father, the Son and the Spirit! Such a truth is too plain to deny according to the desire and prayer of Jesus before his betrayal, trial and crucifixion. While praying for the apostles, Jesus mentioned those who would believe on him through the teaching and preaching of the apostles by saying, “that they all may be one, as You, Father, are in Me, and I in You; that they also may be one in Us, that the world may believe that You sent Me.” (John 17:21 NKJV)
Denominationalism goes directly against the prayer of Jesus. Denominationalism goes directly against the mission of the church. Denominationalism goes directly against the unity the apostles preached (1 Corinthians 1:10). The error of denominationalism is more serious than what many consider it to be, and all it takes is one verse to prove it.