Im always very alert with people who claim to be Christians, but also claim that we dont have to follow certain laws, or preach something that goes against Gods word. Like, for example, the belief that Israel is not Gods chosen people, but anyone who comes to Christ is His chosen people, and that the promises He made to Israel are now null and void. People who preach this doctrine always have that "God doesnt care about 'real estate'" argument, and with this belief they actually turn their backs on Israel. They claim they wouldnt, but then, even in the pride of their own beliefs, become more and more anti Israel to the point that some "Christians" even support handing Israel over to the palestinians. Ive even heard that the pope supported this, and claimed that the Jews had no right over the promised land.
Or, in a more clear example, coming from my old life, I totally let weird arguments like "its okay to dress as a woman if you really want to be one", "You can be with a guy if you really love him" dictate Gods word for me, instead of actually going to His word myself. So with anything from His word, Im always very uncertain of people who claim things like "oh you only have to follow that commandment if *this or that is fulfilled*", I do think this leads some people against Him, without them even knowing it happened.