The Bible teaches us that a double-minded man is unstable in all his ways and that every kingdom divided against itself is brought to desolation: and a house divided against a house falls.   The answer is that ye be ONE.   While speed reading the NT completely I observed an insight: For every virtue of God, there is a sin of the flesh, starting with the same letter.  Catch the concept- two houses, rock/sand, good/bad, light/dark, sin/salvation, Unity/division… but starting with the same letter for each opposite.