Ugly
Ulcers
Unbeliever
Unbelieving partner
Uncaring
Unconditional love
Understanding:
-comes from ...
-God
-scriptures/Bible
-some can't now – why? 
Unequally yoked
Unfeigned faith
Unforgiveness
'Unforgivable' sin?
Ungodliness
Unified field theory
Unintelligent.(a non-intelligent way of forming beliefs)
Unions.(way to solve negotiation stumblingblocks)
United States of America Army
United States Constitution
United States of America doing good
Unity in the spirit
Universe
University of Calgary.(Shadia Drury)
University of Science and Philosophy
Unknown god
Unpardonable sin? 
Unrighteous / make them righteous
Unthankful
Unwed mothers – abortion?
Unsane
Upset.(does God get upset with us?)
Urim & thummim
Urine: 
-animal
Use it or lose it
Usury
Utterance
Uttermost
Uzzah