Readers of this blog may be interested in creating a Logos account in order to receive the Logos Free Book of the Month each month. There is usually a second book sold for about $1.99 as well.
Through this offer, I recently received Esther: Evangelical Exegetical Commentary (EEC). I believe the first commentary posted on this blog (way back in 2008) was on Esther. It was written using commentaries on the entire Bible so it only covered the main issues briefly. As I’ve read the EEC I’ve updated all the old Esther posts to provide more content. The updated posts can be accessed through the Bible Commentary link.