Is it from God? Is it Wrong or right? 3 steps to find out.1. Does it align with God's word?
If it comes from God it will never ever go against His Word.
2. Does it go against God's law of nature?
God made law and order, everything from Him will be according to the law of nature...
Examples: marriage is between a male and a female... in the winter, it is cold and there is snow...apple trees produces apples, orange trees produce oranges...rabbits produce rabbits, sheep produces sheep...etc...
3. What results does it have in the end?
What comes out from it? Is the result good, or bad? Does it bring hurt or harm? Or does it result in joy, and peace?
Examples: in Buddhism if every man became monks, there would be no children and after those generations die, there would be no one left on earth...etc.