This is so simple yet we make it so hard to give ourselves an excuse for our unbelief. Faith is easily understood as compared to unbelief. Do you believe your friend or not when they tell you something? As we learn our friends we know when they are teasingly telling us the truth or not. Sometimes people we do not know we have to decide do we believe them or not. Stated differently, do i have faith in them or not. Why is it we think faith is so optional when dealing with God? It cannot be or otherwise it would certainly make us look disrespectful. Sometimes people just don't know what all God said He would do and they never know so how could they ever have faith or trust shall we say He would do anything. Let's take for granted we have a record of what God said He will do for us and its written down in a very accessible book called the Bible. Faith would be if either you or i or both of us decided to believe that the things God said He would do for us we simply chose to believe were so and started acting like they would soon happen in our lives.