Romans

"The Epistles stand in relation to the Gospels somwhat as Leviticus to Exodus. In the Gospels we are set free through the blood of the Lamb. In the Epistles we are indwelt by the Spirit of God. In the Gospels, as in Exodus, God speaks to us from without. In the Epistles, as in Leviticus, God speaks to us from within. In the Gospels we have the ground of fellowship with God, i.e. redemption. In the Epistles we have the walk of fellowship with God, i.e. sanctification. As in Leviticus, so in the Epistles there is exhibited to us the many-sidedness of our Lord's atonement as it bears on those who are already redeemed." - J. Sidlow Baxter