I was also taught that many years ago, but my position on it has been changed. People usually are taught or make their decision regarding perfection for God or in the scriptures based on what they or someone to whom they listen have determined perfection to be.
What I have found is different and is in the scripture, but people usually don't see it or skim over it because they already have their
definition of perfection established in their minds. They are no longer listening. They usually don't want to hear me describe it because if they were to even seriously consider what I had to say, they might have to do something they have not been doing that according to God [and/or the scriptures?] that perhaps they should be doing... It starts perhaps here:
"I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service." Rom 12:1
No more of that. I just wanted you to realize that I am not standing on this where many are standing.