“Now faith is the substance of things hoped for, the evidence of things not seen.” Hebrews 11:1
Faith is not blind trust. In fact, without faith we are blind spiritually. As sight is a sense that gives evidence in the physical world, faith is the sense that gives evidence in the spiritual world. It is not nebulous or vague, but actually more substantive and reliable than our physical senses. Faith is the support and proof for what we expectantly anticipate as believers.
Without faith in God and His Son Jesus Christ, we cannot be saved and we cannot please God. We lack the ability to understand beyond what we can observe. But there is so much more to be grasped than what our surroundings are able to tell us. Faith takes us beyond the intersection of the visible and invisible. It helps us understand ourselves and our need for a Savior. It reveals many of the mysteries of the world in which we live, and it tells us of the world to come.
So where does faith come from? Faith is a gift from God (Ephesians 2:8), delivered through and nurtured by His word (Romans 10:17). If you have it, continue to walk in it and allow it to grow. If you don’t, ask God for it and go to a church where the Bible is being taught.