1. God Can't force you to love Him.
God is the one all powerful force in the universe. He Created the universe out of nothing, and made us out of the dust of His Creation. He holds together every cell in your body, every atom in every cell. He gives you each breath that you take, He causes every beat of your heart, but He won't force you to Love Him. He gave us the free will to chose Him, or to reject Him. You can chose to love Him and allow His love into your life, or you can chose to be separated from Him for eternity. While this seems like such a simple choice, millions of people chose to live their lives without Him and will never feel His infinite power and love.

2. God Can't Lie.
God is the absolute definition of Truth. When God speaks, it is the truth. His Word is Truth and His Son is Truth. If you read Prophecy in the Bible, You will see that even the most obscure things in it are coming coming to pass. Things that most people wrote off as symbolism due to the odds against them actually literally happening. The areas that science thought they had disproved, have been found to be real. When God say's he will return for His flock, He means it. When He say's he will punish those whose sins are not covered by Jesus's Blood, He means it! You can trust the Bible and every Word and Promise in it.

3. God Can't Learn.
That means that you can't disappoint Him! He knows everything about you. Everything you've done and most importantly, everything you're going to do! Many people think that God is disappointed in them when they make a mistake, or commit a sin. The reality is, He already knew you were going to do that, and He knew the very day and hour you were going to slip up! You might be shocked and surprised at your behavior, but God isn't. He already saw it and it was already covered by the Blood of Jesus Christ on the Cross (if you're a Christian).
It's comforting to me to understand that God knows my deepest darkest sins and thoughts, that He knew them 2000 years ago, and He still chose to love me and suffer in my place.