You've probably seen this meme on a bumper sticker. Occasionally I'll be riding in the car with another Christian and have a chance to point it out to them, and ask them what they think about it. Usually the ones with very strong convictions say they don't like it. They'll say "it's relativism" or "new age bull crap". I know where they are coming from.
There is no way around the fact that Christianity is a proselytizing belief system. The great commission is spelled out in Matthew 28:19 "Go and make disciples of all nations. . ." One way of looking at this is "I know the truth, and you believe lies. If you do not recognize this, you are my enemy and I must give you no quarter." This response is ingrained by the Evangelical Media Culture which is hostile and highly politicized. This response is not helpful, instead of building bridges it builds walls. That's when I tell them I think it's Biblical. "No!" they say, "How do you get that?" That's when I like to point out this passage from the Apostle Paul.
18If possible, so far as it depends on you, live peaceably with all people. 19Do not avenge yourselves, dear friends, but give place to God’s wrath, for it is written, “Vengeance is mine, I will repay,” says the Lord. 20Rather, if your enemy is hungry, feed him; if he is thirsty, give him a drink; for in doing this you will be heaping burning coals on his head. 21Do not be overcome by evil, but overcome evil with good.
- Romans 12:18-20
Here we see that what Paul advises is very different from what passes for wisdom today. Instead of giving no quarter, he says if your enemy is hungry feed him, if he is hungry give him something to drink.
We've forgotten that our battle is FOR flesh and blood, not against it. These people with beliefs so different from our own are not obstacles, they are our mission field.