A lot of times when we read the Bible, there are passages that are confusing or we want to understand better. The first impulse is to send Bert an email and ask him about the text. While Bert is often the Bible answer man, we sometimes have these questions when it is not convenient to ask him. Hence, we turn to a Bible commentary. While there is a huge range of them and many free ones online, one that I have turned to from time to time (but forgot about until recently) is by Dr. Thomas Constable from Dallas Theological Seminary in the US.