Luke 1:37 For with God nothing will be impossible.
Another aspect of the impossible (as seen by man) being made possible because God said so!
God is just and has never lied to us; that means we can trust in every single thing that He has said. Everything that God has said has or will come true because everything that He has said is a promise to us.
I have learned to trust in all the things that God has given us through our bibles because I see them come true. I know people have their own agendas and I know the truth is always pushed or stretched; but not so with God.