What makes life worthwhile is having a big enough objective, something which catches our imagination and lays hold of our allegiance, and this the Christian has in a way that no other person has. For what higher, more exalted, and more compelling goal can there be than to know God?
J. I. PackerThe most excellent study of expanding the soul, is the science of Christ, and Him crucified, and the knowledge of the Godhead in the glorious Trinity.
J. I. PackerIt is not for us to imagine that we can prove the truth of Christianity by our own arguments; nobody can prove the truth of Christianity except the Holy Spirit, by his own almighty work of renewing the blinded heart. It is the sovereign prerogative of Christ's Spirit to convince men's consciences of the truth of Christ's gospel; and Christ's human witnesses must learn to ground their hopes of success not on clever presentation of the truth by man, but on powerful demonstration of the truth by the Spirit.
J. I. Packer