Jesus did not come to destroy or cause violence, He came to save the world from such.

He rebuked His disciples everytime they spoke of doing something violent, He said if you live by the sword, you will die by the sword.

When God speaks to us and say 'Go', we are to move at His first call, that is obedience. Jesus said let the dead bury their own because that person if died spiritually would all ready be covered by the blood of Jesus and if an unbeliever, let the unbeliever deal with him while you go and take care of the Lords' work.

There are many people who need to be ministered to, who need to know about Jesus, so we have to go preach the gospel to the unbeliever and make God first in our lives, anything else can be secondary.