I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service. 
Romans 12:1
When we come to God, we give God our lives and we then trust Him with it.  But it is completely reasonable to trust our lives with Him because he is all knowing and all sufficient.    We are limited in our own knowledge but He knows everything.  So there is a place of yielding to God and His way instead of by sight and doing it the way that we think it ought to be done.  This takes faith.  This takes trust that only God can see the danger that may be ahead of us.  Only God knows where the provision is that we need for us.  Learn in this series how to walk trusting the Holy Spirit and his direction for our lives.  A life of service and worship to God which is our reasonable service.