God is not a liar. He can only tell the truth. If He tells a lie All that He stands for will be destroyed in the blink of an eye!
In the same way God is Love and again if He does not Love people, you and me, all that He stands for will cease to exist!
We can in fact go through all the known Attributes of God Almighty and put each one to the test. If even one of His Laws is broken, all of them will fail and He will cease to exist!
Now it is easy to see if He has defaulted on anything He has claimed to be by checking any one of the Laws He put into place.
Take a book, hold it up, and then let it go. What happens? It falls to the ground because the Law of Gravity still exists! Even a feather or a leaf though blown around by the wind, is eventually drawn back down to Earth because of this Law.
We can go throughout the Bible and see all the Lord has promised His children. Every promise holds true because of His Great Majesty!
But every curse also holds true to me if I do not choose life as He suggests in the Book of Deuteronomy:
This day I call the heavens and the earth as witnesses against you that I have set before you life and death, blessings and curses. Now choose life, so that you and your children may live. (Deuteronomy 30: 18-20)