Conversion, then, is repentance (turning from sin and unbelief) and faith (trusting in Christ alone for salvation). They are two sides of the same coin. One side is tails -- turn tail on the fruits of unbelief. The other side is heads -- head straight for Jesus and trust his promises. You can't have the one without the other any more than you can face two ways at once, or serve two masters.

Night and day I pondered until I saw the connection between the justice of God and the statement that 'the just shall live by his faith.' Then I grasped that the justice of God is that righteousness by which through grace and sheer mercy God justifies us through faith. Thereupon I felt myself to be reborn and to have gone through open doors into paradise.