Leviticus 10:1 And Nadab and Abihu, the sons of Aaron, took either of them his censer, and put fire therein, and put incense thereon, and offered strange fire before the LORD, which he commanded them not.
Strange fire is a fire that the Lord has not commanded us to offer. He wants to be worshipped and served as He has commanded. We do not decide what is right or good, He does. How many of our churches are offering strange fire to our God. If He has commanded us to take the gospel to the whole world and our obedience to his commands is for His glory and our worship towards Him what does that say about the way we do things.