The culmination of all the definitions for "faith" I could find = “to trust or believe without reason”.
I have a tough time separating faith from reason. I have faith in reason. I also have reason in faith. I have reason to have faith. Remove reason from faith and you have an ignorant child, remove faith from reason and you have an ignorant adult.
I believe that “faith” and “reason” are different, yet interlocking, parallel and equivalent ways of knowing.
Everybody has faith in one form or another and to differing degrees - whether they admit it or not [faith in their spouse, their drugs, their alarm clock, their deity, their insurance, themselves, etc.]. This gives evidence that we are not hard-wired to have tunnel vision to make decisions simply based on tangibles and reason alone. We use faith to trust, to a degree, those things which are out of our immediate control. Faith is part of the checks and balances of one’s internal government. Reason is that faculty of mind that is able to judge things whether they be true or not. You cannot reason with an unreasonable person and it is unfair to have a war of wits with an unarmed person. Reason has become a prejudice for the ignorant, the worst form of prejudice because reason is the only instrument for liberation from prejudice. To believe that we are to have faith and not reason is to have a theology of ignorance. The fact is that reason and faith validate each other.
Most associate faith with spiritual or religious beliefs that extend beyond this life and world.
"Faith is being sure of what we hope for and certain of what we do not see" -- Hebrews 11:1
Faith in an unseen noun or verb can be construed as a comfort and a gift – or dismissed as a placebo meant to lend a false sense of well-being or illogical consolation. Either way, faith exists for the benefit of the faithful, just as a judgment occurs for the benefit of the judged.
“We look not at things seen, but things unseen; for things seen are temporary, but things unseen are eternal.” -- 2 Corinthians 4:18
Regarding faith as it relates to belief in God, some have it, some don’t. I possess it. I have faith in many things, but the biggest avenue of faith that I have is in the love of God and the Truth of the eventual universal salvation of all.
"The Father has given ALL things into the Son's hands" (John 3:35) and so "ALL flesh shall see the salvation of God" -- Luke 3:6
Faith is one of the many internal compasses that help steer people’s decisions and disposition in life. The power and size of the compass depends on the individual and their thoughts and experiences as is the state of faith being gained, maintained, or lost.
I have many reasons for why I have my faith and how my faith has evolved.
I think a role of faith should be to use reason to ask more questions in order to enhance both our reason and our faith, to seek inner chambers within ourselves that are in need of occupancy and to attempt to make a greater connection to that which is known but unseen.
"In the end there are three things that will last: faith, hope, and love…and the greatest of these is love." --1 Corinthians 13:13
My Faith Sherpa is on my right, my Reason Sherpa is on my left. One without the other is a tough climb.