God's nature is inclined to truth, which means He keeps His promises. Believe it with all your heart.
Now then we are ambassadors for Christ, as though God did beseech you by us: we pray you in Christ's stead, be ye reconciled to God...2 Corinthians 5:20 King James Version (KJV)
The LORD said to Moses, “Come up to me on the mountain and stay here, and I will give you the tablets of stone with the law and commandments I have written for their instruction.”