#1 Humans are born with a sinful nature and we have all sinned and we are all worthy of eternal damnation and we are unfit to go to heaven. Whoever does not believe this does not believe that we need a Savior and therefore minimizes the importance of salvation that Christ the Messiah carried out for us at the cross.
#2 Yahshua Jesus is the Messiah, the spotless Lamb of God. Whoever does not believe this and does not believe that Yahshua Jesus was born into the world as a man, is not of God. I John 4:2-3 It is impossible for a Christian to be in unity with such a person.
#3 Christ the Messiah was conceived by the Holy Spirit, born of the virgin Mary and sinless. Whoever does not believe that Christ was conceived of the Holy Spirit and born of a virgin, evidently does not believe that Christ was sinless, and to speak such a thing is blasphemy. If Christ was not sinless, then He cannot possibly save me from my sins, and this is at the heart of the gospel. Christ who knew no sin, became sin in our place, that we might become the righteousness of God in Christ.
#4 Christ the Messiah died on the cross for your sins and mine. Whoever does not believe this evidently does not believe that the plan of salvation has been accomplished by the Messiah. If this is not true, then the preaching of the gospel is foolishness.
#5 Almighty God the Father raised Christ from the dead on the third day. Whoever does not believe this does not have faith in Almighty God, for in Romans 10:9 it says this is a requirement for salvation.
#6 Christ will return for His bride the Church at the appointed time of the heavenly Father. Whoever does not believe this apparently does not believe that Almighty God offers us eternal life through Christ the Messiah.
#7 The Holy Bible is completely trustworthy for is inspired by the Holy Spirit Himself. Whoever does not believe what the Holy Bible says apparently does not believe that Almighty God delivered His word to us and that it can be trusted.
#8 Blatant sin is intolerable and the Church must never tolerate it among their own. Some of these sins are as follows: worshiping and serving false gods, idol worship, murder, rape, homosexuality, blasphemy, adultery, theft, covetousness, misusing the Almighty’s name, abortion in general, bearing false witness, dishonoring parents. Whoever approves of blatant sin, or takes an attitude of “it is okay for people to do whatever they want as long as it does not harm me”, does not accept the fact, that Almighty God is a holy righteous God and He hates sin.
It is virtually impossible for a Christian to have unity with anyone who does not accept these 8 things as foundational truths, for without these 8 things there is no value in the existence of the Church, or for that matter Christianity in general.