Well, there is quite a lot to say here, and as long as you are asking with a sincere desire to hear the answers, I 'm sure that many here will be happy to join you in conversation. If, however, your desire is simply to be confrontational, then I will lovingly bow out at the end of this post. If you are not at a place with God where He has softened your heart to hear what we have to say, then we can talk until we are 'blue in the face', and still be unable to reach you. I know, however, that 'through Him, all things are possible, and so in His own perfect timing, He will soften your heart to hear the Truth, and at that time all we have said will come back to you.
That is not to say that we insist that you admit that we are right, because at the end of the day, it does not matter what you say to us. What matters to us as Christian is what happens between you and Him, and only you and He will really know. He gave free will, and you can choose Him or choose something else, the decision is always yours.
As Christians, however, part of you we are is sharing the Word of God and His promises with everyone we meet. We sincerely care about you, and all others, and want to know that when the end comes, we have done all we can to bring all to Christ. Jesus commissioned us to do that in the Bible when he said, All authority has been given to Me in heaven and on earth. Go therefore and make disciples of all the nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all things that I have commanded you; and lo, I am with you always, even to the end of the age. Amen (Mt. 28:16-20).
So, let's get to some of the questions I pulled out of your posts.
Q: How do I go about finding out for certain what God wants me to believe?
A: Ask Him - and then quietly listen for His answer. Do not set your decision on what any man says, but on He who created the universe.
We can debate your scripture over our Christian Bible, which we know to be the inspired Word of God, but when He speaks to you directly, there can be no second guessing.
Q: Please present evidence that the Bible is the final answer, which would mean that the Scriptures of my faith are false teachings.
A: According to my admittedly brief glimpse into the teachings of your faith, I see that we agree that there is One True God.
Now, in the Bible, it states, "In the beginning was the Word, and the Word was with God, and the Word was God.He was with God in the beginning."
and then
"The Word became flesh and made his dwelling among us. We have seen his glory, the glory of the One and Only, who came from the Father, full of grace and truth. "
There were many great prophets He used throughout the Bible, but clearly He has introduced Jesus, not as a prophet or messenger, but as God Himself among us.
Also, as has been pointed out, the Bible states that 'the only way to the Father is through me."
So, putting this all together, any teaching that Jesus is simply one of a great many messengers, and that the Father can be attained through any of them, is simply a lie.
Which leads us to:
Q: The guidance I received as a result of that prayer led directly to the non-Christian religion I currently belong to.
Christians have said to me that God's guidance would lead only to Christianity. My experience is different. What are your thoughts about what happened?
A: In the Bible, Satan tempted even Jesus, by corrupting the Word of God to try to use it to suit his purposes. Jesus resisted all temptation by using the Word in response. So you see, for us, any rational argument used to explain our faith comes from the Bible.
Some other tools that Satan uses are to corrupt the definition of the Kingdom and make it as worldly and this-life centered as he can. He does not want us center on the Truth, because under the Truth he cannot win. So he tries to get us to believe passages are subject to multiple simultaneous varying interpretations. "Who is to say what or who is right" is the voice of rebellion. God will always show a seeker the proper perspective if he seeks the truth at all costs. (some words by Brian M. Schwertley, who said it better than I ever could have)
If the adversary can get folks to believe his lies, his work is easy, and they are lost to the Master unless they choose to rebuke him.
I hope that some of this answers the questions that you have. Now talk with the Father, and then make your decision from His leading.