The Gospel Coalition has a blog by D.A. Carson. It's the daily readings from Carson's volumes, For the Love of God. These volumes take the reader through the bible in a year using the M'Cheyne bible reading plan, and Carson provides commentary on one of the four readings for that day. There are two volumes, so there is a lot of commentary. On January 2, volume 1, the commentary is with regard to Genesis 2. On January 2, in volume 2, the commentary deals with Ezra 2. From what I saw at the Gospel Coalition, today's excerpt is from volume 1. I have both volumes of these devotionals, and I can tell you that they are excellent.
If you don't have them, and don't mind reading them online, it looks as if you can read them at the Gospel Coalition. If you're like me, and need to have the paper in your hands, I believe there is a link to purchase the volumes.