Thank you for contacting BibleAsk.
The Bible teaches that there should be one body or church “For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles” (1 Corinthians 12:13). But there are different denominations today because people are not strictly adhering to the word of God (Mark 7:7).
Just before Jesus left Earth, He earnestly prayed for the unity of His disciples “Holy Father, keep through thine own name those whom thou hast given me, that they may be one, as we are” (John 17:11). But He added that such unity must be based on His truth “Sanctify them through thy truth: thy word is truth” (John 17:17). The Word of God is declared to be “truth.” We become new creatures by making the truths of the Word of God a part of the life. Therefore, the Word should be the only unifying standard to the different Christian denominations.
There is an ecumenical movement around the world aiming at uniting the different denominations but this unity should take place without compromising the principles found in the Word of God. In other words, there can never be true unity when truth is mixed with error. Paul adds that the Word of God is like a sword in its effect: “And take the helmet of salvation, and the sword of the Spirit, which is the word of God” (Ephesians 6:17).
Jesus asks those who leave Babylon to join the remnant church–of which He is the head. Jesus said, “Other sheep I have, which are not of this fold” (John 10:16). Of His sheep outside His fold (church), He says, “Them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd”; “My sheep hear my voice, … and they follow me” (John 10:16, 27).
The word “church” is translated from the Greek word “ekklesia” which means “called-out ones.” Today, Jesus calls His people out of the world and Babylon into His true church. Christians in the different denominations need to pray and work hard to fulfill Christ’s prayer and unite on His Word that they may be empowered by the latter rain to spread the gospel to all the world.
In His service,