This review of Israel's history was to show how they were what they were, and where they were, and enjoyed what they enjoyed only on account of God and His gracious dealings with them. The pagan gods their fathers served beyond the Euphrates River or the gods of Egypt or the gods of Canaan had nothing to do with all the blessings they enjoyed. In this forceful way he places upon Israel their moral, covenantal obligation to worship and serve YHWH alone.
It's important to stop from time to time, even daily, and take stock of where we are and how we got here. Where are you now? Are you happy where you are in your life? Or does your life seem like a bad dream and you wonder how you got yourself into this mess? But we must go deeper in our inquiry. If you are happy and content, what is the reason? Is it because your life is for now free of any big problems--because your job is pretty secure and rewarding, there are no major relational issues and you are relatively healthy? Or maybe other people might be surprised to find out that you are actually happy and thankful because they know you are going through some major trials in life. On the other hand, you may be feeling miserable precisely because you are in the midst of a serious trial or simply because you are disappointed by where you are now. Or other people might be puzzled to find out that you are unhappy because you seem to be in an enviable place in life in terms of your family and career and health and finances. This may be due to the fact that you forgot to be grateful for what God has given you and you think you deserve more. Or this may be due to a godly hunger and thirst, coming from an acute awareness of the utter inadequacy of material abundance to satisfy your soul.