We are unfaithful, but God is faithful

Faith comes from God, not by men.
God of Abraham, Issac, Jacob, Moses made these people to have faith by being with them and showing them His works.
We are unfaithful by nature, but God is faithful and He show us his perfect plan step by step, patiently waiting until we finally believe His words.
Just look at Moses life, and how he was not obidient to God at first.

Moses said to the LORD, "O Lord, I have never been eloquent, neither in the past nor since you ahve spoken to your servant. I am slow of speech and tongue."
The LORD said to him, "Who gave man his mouth? Who makes him deaf or mute? Who gives him sight or makes him blind? Is it not I, the LORD? Now go; I will help you speak and will teach you what to say."
But Moses said, "O Lord, please send someone else to do it"
Then the LORD's anger burned against Moses ...
(Exo4:10-14)

Even Moses at begining didn't have faith, he didn't have faith that if God says it, it will be done. But after seeing how God furfill His words, Moses later became faithful as he even stand against Paraoh who at that time thought of it as a god.

Same God is dealing with us all, patiently working through us so that we could believe. Why not accept that you are unfaithful and go to faithful God and ask for the faith to believe Him?