It 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. PackerGod in his wisdom, to make and keep us humble and to teach us to walk by faith, has hidden from us almost everything that we should like to know about the providential purposes which he is working out in the churches and in our own lives.
J. I. PackerGod made us thinking beings, and he guides our minds as we think things out in his presence.
J. I. PackerOptimism is a wish without warrant; Christian hope is a certainty, guaranteed by God himself. Optimism reflects ignorance as to whether good things will ever actually come. Christian hope expresses knowledge that every day of his life, and every moment beyond it, the believer can say with truth, on the basis of God's own commitment, that the best is yet to come.
J. I. Packer