I am aware of many beliefs and principles that Christians support and have. However, I'm trying to recognize principles that all, if not, at least most Christian hold along with their religion. What are these principles other than the 10 commandments?
It depends on how narrowly or broadly we're defining "Christian" here. If we're going by historic, traditional, orthodox Christianity (which includes Catholics, Protestants, Orthodox and Anglicans) then the Nicene Creed is held in common (though the
Filioque clause still causes some strong disagreement between Catholics and Orthodox).
That is:
We believe there is only one God, He created everything, whether visible or invisible.
We believe God is Holy Trinity: one Being, Three Hypostases of Father, Son and Holy Spirit.
We believe that Jesus is the Christ. The promised Messiah which the ancient Jewish prophets hoped for.
We believe that Jesus is Lord, the one whom our allegiance belongs to, and that He is our Teacher and we are His disciples.
We believe that He was born of Mary, who was a virgin, and this was by the miraculous power of the Holy Spirit. That means there was no sperm that fertilized her egg, not even "divine sperm".
That Jesus is the Son of God because He is "born" (begotten) of the Father before all time and space, without beginning or cessation, and that He is therefore Himself truly God. Having the exact same Being and nature as God the Father.
We believe that Jesus suffered and died by crucifixion under the governorship of Pontius Pilate, that He was laid in a tomb and three days later rose--physically--from the dead. He returned to God, where He currently reigns, and that He is truly and actually alive.
We believe this same Jesus will return one day, in order to judge both the living and the dead, and bring the fullness of God's kingdom which will be forever.
We believe that the Holy Spirit is God with the Father and the Son (as already mentioned, the Holy Trinity) and is worthy of worship and honor as God just as the Father and Son are worthy of worship and honor as God.
We believe that Christ Himself founded His Church, which we say is one, holy, catholic and apostolic. And that there is true fellowship and communion among all the saints, among all the Faithful, both those on earth and those who have passed on.
We believe in the resurrection of the dead, that when Christ returns the dead shall be resurrected just as Christ was resurrected, bodily and physically.
We believe that there is forgiveness of sin.
We believe there is an everlasting life in the World or Age to Come when God makes all things new.
-CryptoLutheran