Faith according to Merriam Webster is the belief and trust in and loyalty to God.
1. Matthew 17:20 - So Jesus said to them, "Because of your unbelief; for assuredly, I say to you, if you have faith as a mustard seed, you will say to this mountain, "Move from here to there," and it will move; and nothing will be impossible for you. (God will give you what you need when you need it)
2. Hebrews 11 - Now faith is the substance of things hoped for, the evidence of things not seen. For by it the elders obtained a good testimony. By faith we understand that the worlds were framed by the word of God, so that the things which are seen were not made or things which are visible.
3, James 2:20 But do you want to know, o foolish man, that faith without works is dead?