The original meaning of the word where the word 'transforming' is used (NIV), is actually 'disguise' (this has been corrected in the new 2013 edition) --- because satan and his demons CANNOT become angels of light. They ARE wicked and have been cast out of heaven. That is why they have to disguise themselves, so humans are tricked into thinking that these are good, when in actuality they ARE WICKED through and through.
Defend your spouse as they pray. Be a covering for each other and make sure your Faith shields are big and strong! Also it is so important to help each other sharpen your swords. That is speaking The WORD of GOD into circumstances that helps to bring Hope in God's Victory! Remind each other of past victories, that sharpens your swords too.