Thanks for joining the discussion.
So why should anyone believe Christianity is the religion truly revealed by god. Using logic and my knowledge of history I would have to conclude that maybe Hinduism or Buddism is the true religion since they came prior. Not Abrahamic religions of course but the mere fact that you write off every non abrahamic religion from the start of your posts and then proceed to back yourself up with a timeline is interesting. It is obvious to me why you choose to have no need to explain that however one thing I'd like to say is that the vast majority of religious folk I know from various abrahamic sects believe they are all talking about the same god but have different ways of practicing due to cultural factors.
Your opening question:
So why should anyone believe Christianity is the religion truly revealed by god.
First, we should begin by agreeing on the definition of "religion truly revealed by God; of God's making". I stated the definition as:
Theologically, philosophically, or metaphysically speaking, what I mean by religion is an act of homage by which we render to God both privately as individuals and publicly as social beings, the honor, gratitude, worship and obedience due Him and in the way prescribed by Him. Religion, in the way prescribed by Him, indicates revealed religion by God Himself.
Throughout this discussion I have always asserted there is but one holy religion of God's making. The one holy religion "of God's making" narrows down the field quite a bit. It can't be Islam, Protestantism, Buddhism, Hinduism, or modern Judaism for they are all man-made. From that list, we can knock out Hinduism and Buddhism because they are pantheistic.
Modern Judaism was developed by Rabbis after 70AD, Mohammedanism (Islam) was developed in 650, the thousands of various sects that developed within Protestantism began in 1517. They all believe in One God yet they are four distinct religions with different doctrines and different belief systems. Reason tells us that since there is but One God, it is impossible to believe that God, Supreme Truth Himself, revealed such contrary doctrines, teachings and worship.
The one holy religion of God's making is Old Testament Hebraic Judaism full blossomed into New Testament Catholic Christianity.
Here's how I arrive at that and answer your opening question at the same time.
Man has always had a revealed religion taught by God. This religion falls into 4 categories or stages of development throughout the history of mankind.
One---the first stage of God's revealed religion is known as the religion of innocent man in that Adam and Eve were instructed immediately by God. God promised a Redeemer would come.
Two---after Adam's fall, Adam handed on to his children the truth about God and the duty of worshipping God as God had taught him. Thus Abel offered sacrifice. The traditions were handed on down through the ages through Adam's posterity, and as far as what is right and what is wrong, conscience dictates what is naturally right and this stage is called the Natural Law. However, God gave revelations to various individuals such as the Patriarchs, over and above the Natural Law, and this stage is often called the period of Patriarchial religion or the period of pre-Mosaic unwritten law. For example, by Patriarchs, Noah belonged to this stage.
Three---the third stage of God's revealed religion came with Moses whom God gave a cleared exposition of religious duties to be put in writing. This is known as the stage of the written law or that of the Mosaic religion....Hebraic Judaism.
All during this time period, God sent His prophets to tell the people of the coming Savior.
Four---Finally, God sent His own Son to give the more perfect law, the Christian religion which the Catholic Church practices and teaches n its fullness and will continue to do so until the end of the world when Christ comes again to judge mankind.
Catholic Christianity is Hebraic Judaism fulfilled. Christ said He came to fulfill the Old Covenant Law and the Prophets and He did. Hebraic Judaism was essentially a preparatory religion meant by its very nature to merge into its perfect fulfillment when Christ came. He gave us Christianity which Hebraic Judaism foreshadowed. In the New Testament, and in historical reality, Christ founded a Church and said the gates of Hell would not prevail against it and that He would be with it all the days until the end of the world. His Church and His religion therefore, must be still here and it must have been here all days since His time. That rules out all of the other religions named above. Only Catholic Christianity and the Church has existed and lasted in perpetuity since Christ in 33AD.
What I have just described is the complimentary relationship of Hebraic Judaism recorded in the OT to Christ's Church and His Holy religion Catholicism recorded in the NT.
The Jews as a distinctive people, as Israelites, stemmed from a convert, a Hebrew named Abraham who rejected the gods his father worshipped for the One, true God.
Abramam was the first champion of monotheism, that is of the unity of God, the Creator, Preserver and Ruler of the universe and all that's in it. It was through the 12 sons of Jacob, grandson of Abraham who God changed his name to Israel, that the Israelites came into being. Hebraic Judaism, is the first organic, priestly, sacrificial, divinely revealed religion stemmed from Moses and Aaron, who were born over 4 centuries after the days of Abraham and over 3 centuries after Jacob (Israel).
With the coming of the Messias, Jesus the Christ, (whom Moses had commanded to be heard Deut. 18:15-19), came the New Covenant which the prophet Jeremias said would supersede the Jewish covenant 31:31, when the promises in the Old Testament would be fulfilled.
The Messias instituted a new priesthood, and a new, unbloody Sacrifice, in place of the Aaronic priesthood and its Mosaic sacrifices. The Judaism of the OT fulfilled its divine mission; it ceased to function as the religion of God over 21 centuries ago, in 70AD, when it ceased to have a priesthood, altar and sacrifices.