John Piper says that sometimes our prayers go unanswered because we do not avail ourselves of the gifts of the Holy Spirit.
Theology Refresh: Podcast for Christian Leaders
Kevin DeYoung discusses the role of the Holy Spirit in our understanding of the Bible and our assurance of salvation.
How do I explain my own personal fluctuating experience of joy in God when then source of my personal joy (the Holy Spirit) is constantly, personally, present in me at all times?
Sanctification & Growth
The Person of Christ
The Sovereignty of God