A little more biblical truth for any interested
Because the bible was not confirmed until [around] 381ad, You really cannot/should not look at the bible as the start all/end all on Christianity as some Christian faiths do. There are roughly 350 years of documented history predating this biblical confirmation. Over 30,000 pages of written history from the early Christian church.
Imagine [if you're an american] looking back on your national history staring around 1970. Sure, you get your view of America from the Vietnam war going forward. What you'd miss is the Cuban missile crisis, WW2, WW1, The civil war, [about 25 false end of the world JW prophesies..lol], the War of 1812, the Revolutionary war, The Salem witch trials, the first Thanksgiving and the Pilgrims landing on Plymouth Rock. You would not have a comprehensive view of our history. The US history did not start with President Nixon, it started centuries before.
The same can be said about the Church that Jesus started. He never said 'Write these things down and we'll have a Christian community'. He did say 'Peter, you are rock and on this rock I will build my church' He also said 'Do all that I command and I will be with you til the end of this age' Although it is true that there were other groups that followed some of the teachings and some of the commands of Jesus, only one church was commissioned by Jesus and was built/ promoted by his chosen apostles.
TTWSYF