In preparation for Sunday’s sermon on worship, here are ten observations from Deuteronomy 4:9–31.
1. The middle section of Deuteronomy 4 can be divided into three time-plotted windows.
The first window looks back to the gathering of Israel at Horeb (4:9–14). The second window looks at the people present before Moses. It warns Israel to remember their covenant and not worship idols (4:15–24). Then, te third window looks to the future, to a day when Israel will be scattered because of sin; it also offers hope and the promise of Israel’s restoration because of God’s mercy (4:25–31). From this chronological presentation, Moses shows how the covenant with Israel extends from past to present and from his present to future.
2. The main point of each section is related: Guard your heart!
In verses 9–14 Moses says (twice!), Guard your heart by remembering the covenant made at Mount Horeb. The double command of guarding is seen in verse 9, when Moses says, “Only take care (šmr), and keep (šmr) your soul diligently, . . . ”
Next, verses 15–24 repeat the focus on guarding as Moses exhorts, “Therefore watch (šmr) yourselves very carefully.” In this section, the warning moves to the present, as he urges Israel to guard their hearts from idolatry by remembering who they are—a people redeemed by Yahweh (v. 20).
Last, verses 25–31 foretells a time when Israel will forget God and break their covenant. In other words, they will fail to guard their hearts. Nevertheless, in their failure, God will remain faithful. And Moses promises Yahweh will guard Israel’s future by remembering “his covenant” (v. 13) . As verse 31 states, “For the LORD your God is a merciful God. He will not leave you or destroy you or forget the covenant with your fathers that he swore to them.”
From this reading, we can see how “guarding” is a theme that runs throughout Deuteronomy 4. Continue reading
In his commentary on 
Now we know that the law is good, if one uses it lawfully
If you could only take one book of the Bible with you on a deserted island, what would it be? Psalms? The Gospel of John? Hebrews? What about Deuteronomy?
The Lord passed before him and proclaimed, “The Lord, the Lord, a God merciful and gracious, slow to anger, and abounding in steadfast love and faithfulness,
Last week, I taught on the Mount of Transfiguration in Mark 9. And in my studies I discovered just how much this passage depends on the events of Sinai. In what follows, I will try to show a few of the connections and why reading these passages together is so fruitful for understanding the revelation of God’s glory in Christ’s transfiguration.