No, not all Christian denominations believe in the Trinity. Some denominations, such as Unitarian Universalists and Jehovah's Witnesses, do not adhere to the doctrine of the Trinity.
All of them
christians believe there is one creator of all things, God, and that there is a devil named satan. catholics believe the trinity, which is false, the trinity is that God, Jesus, and the Holy Ghost are all one divine being, which is not true.
Baptists, along with Methodists, Anglicans, Roman Catholics and all the other orthodox Christian Churches believe that the Trinity represents a single God in Three persons, Father, Son and Holy Spirit, as described in Scripture (just one example - the end of Matthew's Gospel). Three persons - yet one God, as outlined by Athanasius in the famous Athanasian Creed (q.v.) Thus Baptists, along with all the other Christian denominations, regard Jesus as divine and the manifestation of God in human form. This is contrary to pseudo-Christian sects such as the jehovah's witnesses, as one example, who regard the Trinity with contempt, and, although accepting Jesus as the 'Son of God' (whatever that means) deny his divinity.
Christian (all denominations)
Millions of people believe in God and Jesus Christ. One can see this clearly through the many Christian denominations all around the world.
Almost nothing if you examine the beliefs carefully. Unless you take the fact that most feel that they along have all the answers correct, the differences include:They interpret and believe in different aspects of the Biblical teaching to their own sects preferencesThet have different criteria for entry into heaven or condemnation to HellEven the belief in the Christian Jesus is not a universal concept. Some Christian groups believe in a singular godhead, others in a Trinity.
The last supper was the event that pretty much started communion, which is used by almost all christian denominations.
Just about all I would say, because you are not a Christian unless you believe in Jesus, and that includes believing that he was crucified and rose again.
If by Eucharist you mean the elements distributed by the priest at mass, then no, not all denominations believe it relieves sins.
Those can be:* People who are believers in other Christian denominations. Most of them are known by the generic term "protestant denominations". * People who believe in non-Christian religions, including Buddhism, Zoroastrianism, Islam, Bahá'í Faith, and others. * Non-religious people; this includes people who don't believe in God at all (atheists), and people who believe God can't be proven or disproven (agnostics).
Those can be:* People who are believers in other Christian denominations. Most of them are known by the generic term "protestant denominations". * People who believe in non-Christian religions, including Buddhism, Zoroastrianism, Islam, Bahá'í Faith, and others. * Non-religious people; this includes people who don't believe in God at all (atheists), and people who believe God can't be proven or disproven (agnostics).
Most (not all) Christians believe in a Trinity, where God has three forms--a Father, a Son, and a Holy Spirit. Although there are three aspects of God, they are considered One God. Some Christians believe in a single God, not a Trinity.