Without the Holy Spirit, Christian discipleship would be inconceivable, even impossible. There can be no life without the life-giver, no understanding without the Spirit of truth, no fellowship without the unity of the Spirit, no Christlikeness of character apart from His fruit, and no effective witness without His power. As a body without breath is a corpse, so the church without the Spirit is dead.

The Spirit, the church, and the world: the message of Acts (ed. Intervarsity Pr, 1990)