Sufficiency of scripture means that the Bible has everything we need to know about God and how to follow Him. Just like how a dress is enough to wear to a fancy party, the Bible is enough to guide us in our faith and our life. We don't need anything else to know how to please God or live our best lives. The Bible has all the answers we need, and it's like a big map that shows us where to go and what to do. It's like having a really smart teacher who knows everything and can teach us everything we need to know. So, we can trust what the Bible says and follow its teachings, and we'll be on the right track to live a good life and please God.