If you want to judge how well a person understands Christianity, find out how much he makes of the thought of being God's child, and having God as his Father. If this is not the thought that prompts and controls his worship and prayers and his whole outlook on life, it means that he does not understand Christianity very well at all.
J. I. PackerBut man's eyes are blind through sin, and he can discern no part of God's truth till the Spirit opens them. Inner illumination, leading directly as it does to a deep, inescapable conviction, is thus fundamental to the Spirit's work as a teacher.
J. I. PackerThere's a difference between knowing God and knowing about God. When you truly know God, you have energy to serve Him, boldness to share Him, and contentment in Him.
J. I. PackerMany humanists in the West are stirred by a sense of outrage at what professed Christians, past and present, have done; and this makes them see their humanism as a kind of crusade, with the killing of Christianity as its prime goal.
J. I. PackerDo I as a Christian understand myself? Do I know my own real identity? My own real destiny? I am a child of God, God is my Father; heaven is my home; every day is one day nearer. My Saviour is my brother; every Christian is my brother too. Say it over and over again to yourself first thing in the morning, last thing at night, as you wait for the bus, any time when your mind is free, and ask God that you may be enabled to live as one who knows it is all utterly and completely true. For this is the Christians secret of the Christian life, of a God-honouring life.
J. I. Packer