J. I. Packer, Knowing God
“People who know their God are before anything else people who pray, and the first point where their zeal and energy for God’s glory come to expression is in their prayers.”

J. I. Packer, Knowing God
“The invariable fruit of true knowledge of God is energy to pray for God’s cause...By this we may test ourselves. If there is in us little energy for prayer, and little consequent practice of it, this is a sure sign that as yet we scarcely know our God.”