Why am I preaching on Matthew 5:10-12 next Sunday?
The answer to this question is quite simple. The answer is that this past Sunday I preached on Matthew 5:8 in the morning and Matthew 5:9 in the evening. By preaching through books of the bible, we as a church will hear all that God has to say in Matthew. It forces us, whether we want to or not, to hear the whole counsel of God's word. It also keeps me from preaching on only those topics that I enjoy the most or feel most comfortable with.
Additionally, studying through books of the bible gives us all a sense of how God crafted His word in shape and theme. My hope is that over time we (myself included) will all come to know God much more intimately through going book-by book. This should work itself out in our loving and serving both God and neighbor.