Bible knowledge = 0?

How many of us can tell others principles on how we should act, what we should think, but when it comes to having biblical support, we struggle to find the right verses to reinforce our principles which are really from the Bible! Ade reminded me the other day about how we really should advice friends, youths or anybody. Not by our own words but by the words of God, straight from the Bible. Which in this case, people like me would have to really keep quiet.