The persons of the Trinity know one another exhaustively, and each understands the #thoughts and #actions of the others. In human beings, there are #hidden depths in our nature so that we cannot fully understand our own actions and motives. But God is #fully #known to himself. Much about God is mysterious to us, but not to him. One way Scripture describes God’s exhaustive self-knowledge is by saying that he is a #speaking God or, simply, that he is #Word: In the beginning was the Word, and the Word was with God, and the Word was God. (John 1:1) God is not only eternal, holy, all-powerful, and so on, but he expresses and shares those qualities -through something like human speech. In his eternal nature, he has the power to speak (the “Word”), and that power to speak is who he is: his Word is eternally with him, and his Word is his very nature. John identifies this Word with Jesus Christ in John 1:14. In Jesus, the Word became flesh. So the existence of the Word did not begin with Jesus’s incarnation. There are hundreds of references to the divine word in Scripture, in both testaments, as the means by which God reveals himself. Paul says, “by their unrighteousness suppress the truth.” (Rom. 1:18). Though God is clearly revealed to all, fallen people prefer to deny that they know him, as Adam hid from God in the Garden (Gen. 3:8). When people say they do not know God, it is not because God has failed to reveal himself, or that God’s revelation is not clear enough. Rather, their unknowing God is something they have done to themselves. And God’s revelation, is also his presence, the place where he meets with his people. God’s nearness to Israel is the nearness of his word (Deut. 4:7–8, 30:11–14). And God comes to be “with us,” Immanuel, in the person of his Son Jesus Christ, his living word to us (John 1:1–14) revealed through man’s internal conscience and the created order. Man is created in God’s image, meaning divine imprint marks him; man is sensus divinitatis, sense of the divine. Man cannot escape the morality embedded within his very makeup as a creature made to reflect his Creator.
The doctrine of the Trinity is the best explanation for all of the biblical evidence. There is only one God, but He exists eternally as three individual Persons and has revealed Himself as God the Father, God the Son, and God the Holy Spirit. This is different from the teaching of three individual gods because the three Persons of the Trinity are co-equal, co-eternal, interdependent, and always in complete agreement. There is one God who exists as three individual Persons. Thus, the Father is God, the Son is God, and the Holy Spirit is God; however, the Father is not the same person as the Son, nor is the Son the same person as the Holy Spirit. This is sometimes complicated by the fact that God the Father is often simply called “God” in the New Testament.
The first three verses of the Gospel of John give us an idea of how this works out:
John 1:1. In the beginning was the Word . . . (We know from verse 14 that the Word is Jesus. In the beginning, He was already there.)
. . . and the Word was with God . . . (At least two Persons are in view here: one called “God” and one called “the Word.”)
. . . and the Word was God (The Word is distinct from God, yet He is also called “God.” The Word is divine in His essential nature.)
John 1:2. He was with God in the beginning (After the essential identification of the Word as God, once again the distinction is emphasized—He was with God when it all began.)
John 1:3. Through him all things were made; without him nothing was made that has been made (Here, we see that the Word is actually the Creator. He made everything. In the Old Testament, we are told that God created everything--Genesis 1:1.)
It is this kind of biblical information that led to the formulation of the doctrine of the Trinity. When “God” is spoken of in the Old Testament, most people probably think of God the Father, but it would be more accurate to think of “God the Trinity.” In the New Testament, we see how each Person of the Trinity assumed different roles in the redemption of lost humanity, but the different Persons are always in complete agreement, acting as one.
Jesus is God, but Jesus (who is God the Son) is not the same Person as God the Father or God the Holy Spirit.
Starting as a small group of Jewish people in Judea, -The “word”- spread quickly throughout the Roman Empire. Despite early persecution of Christians, it later became the state religion. In the Middle Ages it spread into Northern Europe and Russia. During the Age of Exploration, Christianity expanded throughout the world; it is currently the largest religion of the world. Most of the first Christians were ethnically Jewish or Jewish proselytes. An early difficulty came from Within judiasm. There was the question if they had to "become Jewish" before becoming Christian. The decision of St. Peter, was that they DID NOT, and the matter was further addressed with the “Council of Jerusalem.” The doctrines of the apostles brought the Early Church into conflict with some Jewish religious authorities, and this eventually led to the martyrdom of SS, Stephen and James the Great, and “expulsion from the synagogues.” Therefore, there has always been a remenant of native jewish believers throught history.