One of the most helpful books today on the Church is Mark Dever's, 9 Marks of a Healthy Church and it's companion volume, What is a Healthy Church.
May all who love the Lord continue to pray for reformation and revival within American Evangelicalism understanding the "judgment begins with the house of God." (see also Jesus' word to 7 Churches in Revelation 2-3)
May we give our best to see the Bride of Christ grow in gospel maturity (Col. 1:28-29)
I love your church, O Lord!
Her saints before you stand,
dear as the apple of your eye
and graven on your hand.
Beyond my highest joy
I prize her heavenly ways,
her sweet communion, solemn vows,
her hymns of love and praise.
I love your church, O God,
the people you have called,
the church our blest Redeemer saved
with his own precious blood.