Hello Sabrina,
I appreciate your perspective and thoughts on Deutoronomy 4. Our God is so unique amongst other global ideas of gods or deities, because what He asks of us is really so simple, yet He knows in our fallen nature, our twoness, we cannot achieve it. The good news of Jesus is so sweet to salve our wounds in that reality. I also think that the simple yet hard-to-follow nature of God’s map that He laid out for us through His word and history is perfectly represented by the analogy Jesus teaches about the narrow path vs the wide path. One is easy and many people take it, but the other is hard. It is hard and difficult to follow, but as your post suggests, it is still a clear, directive path. It is meant to be followed even if it be harder.