How can we be so sure that Christianity is the truth and every other religion is false? Why would an all knowing God guide some to Allah and some to Jesus? Both parties have equally the same conviction of faith that they're in the truth.
I used to think I was a born again Christian until there were certain things that bought me back to reality and after I started to question some things I had issues on. I started to think maybe Christianity isn't the truth as I was reading into Islam and how they view the Bible. I got genuinely confused about religion.
Why do we believe in God and how is faith reliable? I've been at that state before of feeling like you're in the truth and that God is with you etc, but is God actually there?
Cheers
You may or may not have a satisfactory answer already, but for me I was a skeptic, and didn't believe (in my intellect), but I was exploring and wanted to
test everything, a large range of different things from around the world, and I did. Including also what Jesus said to us to do:
"Love your neighbor as yourself" (with total strangers on both sides, next door)
"Love your enemy" (!!??) (with a real enemy/competitor who had disrespected me for years)
"Forgive...not just seven times, but seventy times seven" (over and over)
"...forgive...your brother or sister from your heart." (not just intellectually or just by will power, but full fledged real forgiveness, so that you can genuinely love them)
Tested, over and over.
The results were often astounding to me, far past even just a good result, even when I expected little or nothing (even then, amazing good results). Through new neighbor friends, at one of their parties, I soon found an amazing best friend who was so much like me in key ways, and from such a different life path, and helped me so much, who was just what I needed at that time. Loving an enemy (for a few seconds, but for real) led astoundingly to him becoming a true friend, totally against my expectation, and to my real shock.
I found out what Jesus says works. His instructions make life sharply better.
Even if you already start with some love and good things in your life and are generally already happy.
Better than the wonderful Tao.
Better than Emerson's best ideas.
Better than well done meditation (even!)
Better than the best yoga teachers and their best sessions
Better than the best physical exercise (in terms of just feeling better)
Better than time off to relax
Better than you name it, because I've explored a lot and tried out all sorts of things, many of them quite good in themselves.
But that was only the start. I had tried a lot of things to undo some old emotional wounds and had a pretty good life, friendships and love, and overcoming of old fears, and much more. A good life. But....to get all the way to true healing of my heart, only through Christ did this finally happen, when I prayed the exact way He said to pray (His instructions in the 4 gospel accounts). Those prayers done the way He said are answered. I've only told you here a part of what I've found, not even much of the best parts.
So, the answer for me to your question: How do you know which?
was
testing, testing, testing, and observing the outcomes.