The founder of Our Faith is Our Lord and Savior Jesus Christ. He selected his twelve apostles and trained them in the spiritual and truth of God. They became the eyewitnesses of our Lord's teachings, miracles and mysteries. Saint Luke, in the book of Acts, tells us: "until the day in which He was taken up, after He through the Holy Spirit had given commandments to the apostles whom He had chosen" (Acts 1:2). The fact that Our Lord had chosen his apostles tells us that He is establishing the Church by His authority and chooses to give this authority to the twelve and their followers. This authority, which is blessed by God Himself, continues to be passed on in our Holy Orthodox Church up until today. The twelve Holy Apostles were commanded to wait and not to depart from Jerusalem until they receive the Holy Spirit: "...to wait for the Promise of the Father, ‘which’ He said, ‘you have heard from Me’" (Acts 1:4). This promise is the gift of the Holy Spirit to be poured out on God’s faithful (Orthodox Study Bible). Here we see that Our God the Most Holy Trinity: Father, Son and Holy Spirit is involved in salvation and in command of commencing the work of the Church. God here tells us so much about himself: The Holy Trinity is One and works in cooperation, we are to obey and wait upon Him, and we can do nothing without Him. Although in the common sense the Apostles were trained, they could not carry on the mission without the Almighty God and the help of the Holy Spirit. Therefore, the Orthodox Church remains obedient to the teaching of our God and His Holy Apostles. This is the reason why the Orthodox Church is called One Holy Catholic and Apostolic Church and without any interruption or change in the apostolic succession. Catholic means complete, whole and universal. Orthodox means "true teaching" and "true worship." Our Lord blessed this tree of His Apostles and said: "...and the gates of Hades shall not prevail against it." (Matt. 16:18) This was made in reference to the confession that Peter made concerning Jesus : "You are the Christ, the Son of the living God." Our Lord tells us that this was made known to Peter by the Father: "...for flesh and blood has not revealed this to you, but My Father in Heaven." (Matt 16:17) From this we conclude that God makes it known to us. God makes the truth known and guides His Church. God has delivered the Faith to His Apostles and Saints. This is found in the Holy Tradition of the Holy Orthodox Church. The word Tradition with the capital 'T' does not mean customs; it means the Scriptures, the interpretation of Scriptures, the Creed, the Service books, the Ecumenical Councils and its decrees, the canons and the Holy Icons.

The Ecumenical Councils are so important because they represent in a collective fashion the will of God made manifest in all of His saints. The whole Church agreed to the words of the Creed. The whole Church agreed on the two natures of Christ ( one person in two natures: God and man). The whole Church said: "the Holy Icons."

The Orthodox Church is built on the truth that God gave to His Saints. The Orthodox Church is the author of the New Testament and that is why it is referred to often as the Church of the New Testament. Saint Peter warns us: "no prophecy of Scripture is of any private interpretation, for prophecy never came by the will of man, but by holy men of God spoke as they were moved by the Holy Spirit." (2 Peter 1:20-21). Scriptures was not written by the mere volition of men but by the inspiration of the Holy Spirit, and therefore Scripture is to be interpreted by holy men guided by the Holy Spirit. Interpretation of Scripture by heretics and unstable Christians is incorrect Saint Peter says: "as also in all his epistles speaking in them of these things, in which are some things hard to understand, which untaught and unstable people twist to their own destruction, as they do also the rest of the Scriptures." (2 Peter 3:16) For this reason, Orthodox Christians resort to the Church's interpretation of Scriptures.

The Orthodox Church is obligated to keep this tradition as Saint Paul tells us: "Therefore, brethren, stand fast and hold the traditions which you were taught, whether by word or our epistle." (2 Thess 2:15). This is the one requirement we hold fast to; the true and pure faith that was handed down to us, which we must keep without blemish just as God desires it to be. And therefore, we remain witnesses to the Faith that God has given us and commissioned us to do before He ascended to heaven: "...you shall receive power when the Holy Spirit has come upon you; and you shall be witnesses to Me in Jerusalem, and in all Judea and Samaria, and to the end of the earth." (Acts 1:8)