"What is a Christian? The question can be answered in many ways, but the richest answer I know is that a Christian is one who has God for his Father."
"You sum up the whole of New Testament teaching in a single phrase, if you speak of it as a revelation of the Fatherhood of the holy Creator.... 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.... 'Father' is the Christian name for God."
- J.I. Packer, Knowing God, pp 181-182.