Terrorists use something they know true Christians cannot employ - deceit and violence. In the past, 'Christians' have employed violence to persecute true believers (see my signature). The greatest proof of the divine hand in true Christianity is in the manner in which true Christians have restrained themselves from employing violence and deceit to counter the religious terrorists. Just like Christ could not use deceit and Bible misinterpretation to counter Satan, today's true Christians must guard against using violence to counter religious terrorism. If violence were to be employed, minority Christian groups like JWs, Sabbatarians and anti-trinitarians would be subjected to what the Roman church did to martyrs in the dark ages. And there lies the danger of church uniting with state. At first it will be in the guise of fighting terrorism and soon after Christians will fight other Christians over the things they cannot agree on.
Matthew 4
3 And when the tempter came to him, he said, If thou be the Son of God, command that these stones be made bread.
4 But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God.
5 Then the devil taketh him up into the holy city, and setteth him on a pinnacle of the temple,
6 And saith unto him, If thou be the Son of God, cast thyself down: for it is written, He shall give his angels charge concerning thee: and in their hands they shall bear thee up, lest at any time thou dash thy foot against a stone.
7 Jesus said unto him, It is written again, Thou shalt not tempt the Lord thy God.
8 Again, the devil taketh him up into an exceeding high mountain, and sheweth him all the kingdoms of the world, and the glory of them;
9 And saith unto him, All these things will I give thee, if thou wilt fall down and worship me.
10 Then saith Jesus unto him, Get thee hence, Satan: for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.
2 Timothy 3:12
Yea, and all that will live godly in Christ Jesus shall suffer persecution.