The Bible is the inspired Word of God, given through people at specific times and places in their specific cultures and in their languages. We live in very different cultures, a very different time and speak different languages - some confusion is expected.
Try reading some old English stories, from many hundreds of years ago, like beowulf.They are hard to comprehend and were written in a culture and language more similar to ours than the Bible.
https://www.amazon.com/How-Read-Bible-All-Worth/dp/0310517826 is a great beginner's guide.
The first biblical mention of Christ is in Genesis 3..
Genesis 3:15 NASBS "And I will put enmity Between you and the woman, And between your seed and her seed; He shall bruise you on the head, And you shall bruise him on the heel."
The whole Old Testament is about Christ..
Luke 24:44 NASBS Now He said to them, "These are My words which I spoke to you while I was still with you, that all things which are written about Me in the Law of Moses and the Prophets and the Psalms must be fulfilled."
So there are no (false) religions that pre-date the only true one.
A study bible that has helped me defend the faith is on link below..
Free App-
https://play.google.com/store/apps/details?id=com.gty.macarthurstudybible
$20 paper version
https://www.gty.org/store/bibles/44NAS2P/nas-macarthur-study-bible-second-edition#.Ygrm_67TtNc.link