Vaughn Roberts has written a really helpful, brief book titled, God’s Big Picture. He shows how the entire Bible reveals how and why God is establishing his kingdom.
He walks the reader through the major sections of Scripture, and does an especially good job pointing out the gospel in both the Old and New Testaments.
The book is targeted toward adults, but it’s so readable that I just took my two older children (ages 12 & 10) through it. So if you’re looking for a helpful, brief overview of the Bible’s storyline for yourself, your older children, small group, Sunday School class, or Bible study, this is a great resource.