If you pop over to my church's website right here then you'll find three great sermons to listen to.
The first is on Satanic Oppression and the reality of the unseen powers we fight against but how God limits them and Christ is victorious over them!
The next is on God's Fatherly discipline of his people for their holiness and how we should not grow weary under the difficulties of life. Based on Hebrews 12.
And the third is on Repentance - it's a two part-er on Psalm 51 and David's repentance over his adultery and murder.
These sermons, in my biased opinion, perfectly illustrate the reason why Reformed theology is so needed and that the evangelical church misses so much by straying from its doctrines.
The reason I say this is because these sermons deal with the hard reality of Christian living. Behind each sermon is a recognition that we are, even as those saved, still extremely sinful! More, that Satan is a very real and present danger and that God's love for us compels him to take action against the sin in our lives.