We have many resources at our disposal for study purposes. Making sure that our songs are supported by the Bible is a necessary step. We can also use Hebrew and Greek study lexicons to gain an even greater understanding of words so that we may move with accuracy and understanding. It is important to rightly divide the Word of truth.
When presenting songs that can be classified as "warfare," we can obtain a greater command of authority when we demonstrate what it is to strike, contend, battle, have dominion, possess, bind, loose, surround, engage, stand, survey, watch, wield, overthrow, overcome, subdue, etc. Expanding our knowledge of the Scriptures will open us up to a stronger ability to move according to the Word.
Keeping things in perspective, we should not engage in subjects that we have not prepared for. The spirit realm is very real. Before we run to conferences to learn the latest "warfare moves" or teach dances that involve such movement, we must prepare by being honest concerning our relationships with Christ. It is our responsibility to know that we have been redeemed, confess and repent of our sins, and have an honest desire to see others set free. We should not "war" for selfish gain, but for the advancement of the Kingdom.