Those who are in the family of Christ are given the promises of God. There are many things guaranteed by God, but His greatest gifts of love are given to those whose faith is in Him. Even for the children of God, Scripture has promised both good and bad things, but His promises of love are seen in history with fulfillment of past promises and some we're still waiting for. The written word of God is for building our faith in what He's promised, and it tells of the future we look forward to.