Modern society is called 'a credit society'. It means that people place great emphasis on mutual trust. In a relationship based on strong trust there is no need of repeatedly being reassured that some promises are kept. If you have such a trust relation with God the Creator, what a great a blessing it would be! We believe wind and air exist though we can't see them. In the same manner, we also sincerely believe in the living God and rely on Him. If we do so, God will be with us, give joy and peace to us, and let everything go well with us (Proverbs 14:26).