Faith

I was reading through the gospels last night, seeing Jesus wandering around healing people. This got me to thinking, how could he heal people and then just leave them? I mean, he did it over and over. I know he was always on his disciples for their lack of faith. Could it be that he had the faith to know that the healing in the name of God would be enough. Did he have the faith to believe that some time, some day, that healing would lead them to a relationship with God?
Now, I know some would say, "Well, Jesus only had a limited amount of time." No, he was God in the flesh. He could have spent another twenty or thirty years here with us if he thought it necessary. Obviously he did not think it necessary. Obviously he had the faith to know we would be alright with what he did.
So I guess I'm wondering about my faith. Do I have the faith to believe that if I do what little I can, will it be enough to make a difference in God's work? Or am I just spinning my wheels and wasting my time and money?
As we see in Nehemiah, Satan can try to distract God's people with doubt and ridicule. It takes a strong people with great commitment and lots of faith to think we can get the task done. If I were working on that wall, carring buckets of sand for the mortar mix, it would take a great deal of faith on my part to think we were ever going to get it done just relying on my efforts. I can't see everything going on around me if I stay focused on my task and get it done. It takes faith!