Lecture 1 The Supernatural Worldview of the Bible 

You may come to this later on, but the expression 'all things visible and invisible' in the Nicene Creed must have been informed by Colossians 1:16: 'For in Him [the Son of God] were created all things, in the heavens and upon the earth, things visible and things invisible, whether thrones or lordships or principalities or authorities; all things have been created through Him and unto Him'.

Can we say that spirit beings could morph into other beings or shapes? Remember that angels can appear to humans as humans.