We believe that the head of the church is Jesus Christ. The church is a body of believers who have accepted Christ as Saviour and Lord and live according to His teachings and commandments. Ephesians 5:23 – For the husband is the head of the wife, even as Christ is the head of the church: and he is the saviour of the body. 
Ephesians 4:15 – 
But speaking the truth in love, may grow up into him in all things, which is the head, even Christ.
Colossians 1:18
 – And he is the head of the body, the church: who is the beginning, the firstborn from the dead; that in all things he might have the preeminence.

The members of the church are prepared for eternity through common teaching, experience, counsel, and admonition in the school of Christ.
1 Timothy 3:15 – But if I tarry long, that thou mayest know how thou oughtest to behave thyself in the house of God, which is the church of the living God, the pillar and ground of the truth.

The unchangeable standard for the life and conduct of the church is the holy Bible. It contains the great divine charter of righteousness and love, God’s Ten Commandments, which were practically demonstrated in Jesus’ life. Through the Ten Commandments, it has been possible in all ages to recognize the remnant church, as well as apostasy. 
Revelation 12:17 – 
And the dragon was wroth with the woman, and went to make war with the remnant of her seed, which keep the commandments of God, and have the testimony of Jesus Christ.
Revelation 14:12 – 
Here is the patience of the saints: here are they that keep the commandments of God, and the faith of Jesus.

“The church is God’s appointed agency for the salvation of men. It was organized for service, and its mission is to carry the gospel to the world.” – The Acts of the Apostles, p. 9.

So they may be a light to the world, in His great mediatorial prayer Jesus prayed for the unity of His followers.
John 17:21 – That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me. 
Ephesians 4:16 – 
From whom the whole body fitly joined together and compacted by that which every joint supplieth, according to the effectual working in the measure of every part, maketh increase of the body unto the edifying of itself in love.