Along with Gideons post above, it always amazes me that God's plan was in eternity past
- Even as he chose us in him before the foundation of the world, that we should be holy and blameless before him. Eph 1:4.
We could say everything is according to God's plan from eternity past.. All looking forward to Christ. Redemptive history, for his glory.
A good question Cameron. This is what Biblical theology answers. I read a good biblical theology primer actually called 'according to plan - the unfolding revelation of God in the Bible', by graeme Goldsworthy. Really opened up the big over plan to me a few years ago. I would highly recommend it.