The fundamental point for a person who wants to accept Orthodox baptism is faith in one God. This faith should imply at least the basic concepts of what kind of personal God Orthodox people believe in. Unfortunately, many who come to the sacrament of holy baptism cannot give an answer to this question.
For an Orthodox person, the Bible gives a clear idea of who Christians believe in. The Old and New Testaments imply the story of the old and new covenants between man and God. The New Testament reveals to the believer the truth about who is God in the full sense.
For Orthodox people, God is the Holy Trinity - Father, Son and Holy Spirit. In Orthodox theology, the Trinity is called consubstantial and indivisible. What does this mean?
Orthodox Christians have faith in one Trinity God in Persons. Thus, the Father is the first Person of the Holy Trinity, the Son is the second Person of the Trinity, and the Holy Spirit is the third Person of the Holy Trinity. Otherwise, Persons are called hypostases, so you can find the naming of the Christian God, which consists in the term tri-hypostatic. According to the teachings of the Christian Orthodox Church, all three Persons have divine dignity and equality in divine greatness among themselves.
God the Father revealed himself to the world in the Old Testament. God the Son became incarnate on earth, taking on a human body. In modern times, no one doubts the historical personality of Jesus Christ. For Orthodox people, Christ is in the full sense of God, who bestowed salvation for mankind. It is about the coming into the world of Christ the Savior that the gospels narrate. The Holy Spirit revealed himself to the world on the fiftieth day after the resurrection of Jesus Christ. Then the Holy Spirit descended on the apostles of Christ, imparting divine grace to them. It was from the moment of the Descent of the Holy Spirit on the Apostles that the public preaching of Christianity began. Therefore, the feast of Pentecost is called the birthday of the Church.
The secret of the dogma of the Most Holy Trinity is hidden for a complete understanding by man to the extent of the limitations of human thinking. Man cannot fully comprehend the essence of God. The Orthodox remain to believe that God is one, but threefold in Persons. That is, there are no three different gods, but one and only three-hypostatic Lord.
It should be noted that for an Orthodox person, the Holy Trinity is not just God who does not participate in the life of people. Thus, Christians see God as a loving Father. St. John the Theologian in his Gospel says directly that God is love. It is precisely this perception of the deity that formed the basis of the worldview of an Orthodox person. God is not just a universal world judge, He is not just the Creator of the visible and invisible world. For Orthodox people, the Lord is a loving Father who is ready to help in all righteous needs those who turn to Him with faith.
