Misusing the Name

My Rabbi lately has been speaking a lot about using G-d’s name invane what it means. Often times I believe we as believers are a little unsure of what it means when He tells us not to take his name invane. It is more then just using bad language with his name. It is using it lightly or using it while lying.
Exodus 20:7 “You shall not misuse the name of the LORD your God, for the LORD will not hold anyone guiltless who misuses his name.
When Moshe the second time was to get water from the rock he was to speak to it. My rabbi pointed out something yesterday I never realized. In Number 20:10 He and Aaron gathered the assembly together in front of the rock and Moses said to them, “Listen, you rebels, must we bring you water out of this rock?”
Moshe misrepresented G-d here, because G-d wasn’t angry with the people. He didn’t want Moshe showing the angry tone. When Moshe Said “we” he included G-d in this, Moshe never said Shall my Brother and I but he said We which would include G-d. Because of this action Moshe was not allowed to enter the promise land.
I have many times heard Pastors and other say Thus saith G-d, and well it really not G-d speaking through them, they are claiming it is G-d to make their words seem more powerful. If G-d hasn’t told us something we are not to say he did, this is miss using his name.
When we represent G-d in a way that does not show his characters which he told us when He told Moshe who he was, we use his name invane.
When we condemn people because of our personal convictions putting our conviction likeluggage and then say G-d told me this and he wants you to do this. We are wrong. Each person will grow and change, the only time we should say G-d told me is when he actually told us and not because it something we feel or think.