One of the prominent Advent Christian voices is Dr. David A. Dean.  He eloquently explains what Advent Christians believe and why.  He explains:
 

“One of the privileges possessed by Advent Christians is freedom of conscience to study and follow the teachings of Scripture.  We are not a denomination in a narrow sectarian sense, and it is important to recognize this as we study and develop the doctrines expressed in the Advent Christian Declaration of Principles.

There is the temptation to view the Declaration of Principles as a creed, a doctrinal statement to which total conformity is required at every point.  E.P. Woodward, who served as chairman of the committee, which prepared the 1900 Declaration, warned against yielding to this temptation when he wrote:

Do not forget that this is not a creed.  It is simply a statement of what the denomination, as a whole, believes.  It is never used as a “Shibboleth” which must be repeated before one can enter an Advent Christian church. ‘Christian character’ is our only test of church fellowship, and members are frequently received who do not assent to all the points in this ‘Declaration.’  The truth is trusted to commend itself to those who are not perfectly familiar with it, thus securing a more essential unity than by requiring assent to a ‘creed.’

While strict doctrinal standards have been set for those in the ministry and teaching positions, Advent Christians have granted to one another the freedom and responsibility of believing, studying, and following the Scriptures . . . our principles are ‘not rigidly binding rules to which every Advent Christian must give consent in order to remain a member.  They are merely descriptive of what most Advent Christians believed at the time when they were formulated.’

Part of the breadth of statement derives from the brevity of the Declaration of Principles since it only contains some 750 words.  Granted that brevity, not much space can be allotted to details.  Again, it was intended only as a statement of our ‘principles’ and, therefore, rightly concentrates on positions, which are both central and distinctive of Advent Christians.  Since members of our denomination recognize a fundamental loyalty to Scripture (“No creed but the Bible” was an early watchword), they have extended to one another freedom of interpretation so long as one is appealing to the written Word for doctrine.  Most Advent Christians of the past and present agree on the principles declared in this brief document, while still allowing one another freedom of conscience on the details” (This We Believe, 1977).

1. We believe that the Bible is the inspired Word of God, being in its entirety a revelation given to man under Divine inspiration and providence; that its historic statements are correct, and that it is the only Divine and infallible standard of faith and practice.

 
2. We believe, as revealed in the Bible:

 
• In one God, our Father, eternal, and infinite in his wisdom, love and power, the Creator of all things, "in whom we live, and move, and have our being." 
  
  
• And in Jesus Christ, our Lord, the only begotten Son of God, conceived of the Holy Spirit, born of the Virgin Mary; who came into our world to seek and to save that which was lost; who died for our sins, who ascended in heaven as our High Priest and Mediator, and who will come again in the end of this age, to judge the living and the dead, and to reign forever and ever.
  
  
• And in the Holy Spirit, the Comforter, sent from God to convince the world of sin, of righteousness and of judgment, whereby we are sanctified and sealed unto the day of redemption.

 
3. We believe that man was created for immortality, but that through sin he forfeited his Divine birthright; that because of sin, death entered into the world, and passed upon all men; and that only through faith in Jesus Christ, the divinely ordained Life-giver, can men become "partakers of the divine nature," and live forever.
   
   
4. We believe that death is a condition of unconsciousness to all persons, righteous and wicked; a condition which will remain unchanged until the resurrection at Christ's second coming, at which time the righteous will receive everlasting life while the wicked will be "punished with everlasting destruction"; suffering complete extinction of being.
   
   
5. We believe that salvation is free to all those who, in this life and in this age, accept it on the conditions imposed, which conditions are simple and inflexible, namely, turning from sin, repentance toward God, faith in the Lord Jesus Christ, and a life of consecration to the service of God; thus excluding all hope of a future probation, or of universal salvation.
   
   
6. We believe that Jesus Christ, according to his promise, will come again to this earth, even "in like manner" as he went into heaven - personally, visibly and gloriously - to reign here forever; and that this coming is the hope of the Church, inasmuch as upon that coming depend the resurrection and reward of the righteous, the abolition of sin and its consequences, and the renewal of the earth - now marred by sin - to become the eternal home of the redeemed, after which event the earth will be forever free from sin and death.
   
   
7. We believe that Bible prophecy has indicated the approximate time of Christ's return; and comparing its testimony with the signs of our times, we are confident the he is near, "even at the doors," and we believe that the great duty of the hour is the proclamation of this soon-coming redemption, the defense of Bible authority, inspiration and truth, and the salvation of lost men.
   
   
8. We believe the Church of Christ is an institution of Divine origin, which includes all true Christians, of whatever name; but that local Church organizations should be independent of outside control, congregational in government, and subject to no dictation of priest, bishop or pope - although true fellowship and unity of action should exist between all such organizations.
   
   
9. We believe that the only ordinances of the Church of Christ are Baptism and the Lord's Supper; immersion being the only true baptism.
   
   
10. We believe that the first day of the week, as the day set apart by the early Church in commemoration of Christ's resurrection, should be observed as the Christian Sabbath, and used as a day of rest and religious worship.
    
    
11. We believe that war is contrary to the spirit and teachings of our Lord and Master, Jesus Christ; that it is contrary to the spirit of true brotherhood, and inimical to the welfare of humanity. We believe that Christ's followers are under obligation to use their influence against war; that they are justified in refusing to bear arms for conscience's sake in loyalty to their divine Master.