I've found it very interesting to read the sermons by Moses in the first 12 or so chapters of Deuteronomy. There are many things that we can learn from this sermon, especially to remind ourselves of God's presence in everything that happens to us. We should never think that we got anything by our own ability or strength and we should always walk with God through all that we do. Maybe a summary of the sermons would be "If God is not in it, don't do it".
Or as Paul put it the New Testament, "For of him, and through him, and to him, are all things: to whom be glory for ever. Amen." (Romans 11:36)
