For current cultural issues within the Church, the letter in Revelation to Thyatira might be the most relevant.
Discipleship
Hell vs Hades; Heaven vs Paradise
The “holding tanks” for the current dead (or the collective Sheol in the Old Testament) are Hades and Paradise: Hell vs Hades, and Heaven vs Paradise.
Spiritual Formation Over Great Strategy
Every other ministry of the church can (and should) grow from the soil of spiritual formation.
Hitting A Church Growth Barrier?
What can a hands-on, shepherding pastor do to stay in pastoral mode when facing a church growth barrier?
Healthy Things Grow: Making Disciples
Say what you want about certain aspects of the Church Growth movement, all Christians should agree that making disciples is top priority.
Confession – A Discipline for Church Planters
God already knows the mistakes we’ve made; confession just heightens our awareness of how we need to realign ourselves with God.