Here is the reason I believe that you can find God in any religion. (coming from a Christian perspective)
In Acts 17:22-25 Paul states to the Athens "Areopagus" (a council of elders in Athens) "As I wondered your places of worship, I even found an alter with this inscription "To an unknown god" There for you worship without knowing it, this I proclaim to you The Lord of heaven and earth, does not live in temples made by human hands, nor is he served by human hands, as if he needs anything, because he himself gives life and breath and everything to everyone."
if the God you worship is the God that teaches the following, then we are in love with the same God and brothers / sisters and that should rejoicing together.
And if you are an Atheist or Agnostic and you feel love for your fellow man, and the sting of injustice for all your human brothers, we should break bread together as well.
Thomas (a disciple of Jesus) John 20:24-29 did not believe until he examined the wounds of Jesus, after his death. If someone who knew Jesus, a walking miracle worker, didn't believe the good news until he touched the wounds, then how can we hold it again people who have a hard time believing 2000 years later?
I Corinthians 13: 1-8 Paul again...
"If I speak in the tounges of men and of angels, but I do not love, I am a noisy gong or clanging cymbal.
And if I have prophecy, and know all mysteries and all knowledge, and if I have all faith so I can remove mountains, but do not have love, I am nothing.
If I give away everything I own, and if I give over my body in order to boast, but have not loved, I recieved no benefit.
Love is patient, Love is kind, Love does not brag,
it is not puffed up It is not rude, It is not self serving,
It is not easily angered or resentful.
It is not glad about injustice, but rejoices in the truth.
bears all things, believes all things, hopes all things, endures all things.
Love never ends.
I Corinthians 13:13
"And now these three remain faith, hope, and love. But the greatest of these is love."
http://lovedyouare.yuku.com