Imagine the horrifying experience of driving on the wrong side of a busy road, and then to be confronted with a sign, “Wrong Way, Go Back”. The sign is designed to warn you of the potential danger ahead and the necessary action to be done so as to avoid the potential harm. Though such a sign may be startling, it is actually very gracious and helpful.
Such an illustration reveals a real danger, but there is a greater danger than going the wrong way on a busy road that every human being faces. What is it? It is the danger of dying without your sins being forgiven. We have all sinned (Rom. 3:23) and the consequence of such treason against our Creator is to receive eternal judgment from Him (John 3:36). However, in His great grace, God has made it possible for us to be forgiven of our sins and to become His children. Our only hope is the saving gospel of Jesus Christ. The means in which we take hold of salvation in Christ is by the God’s gift of repentance and faith. Repentance and faith belong together in the conversion experience – they are two sides of a single coin. In the words of Sinclair Ferguson,
“We cannot separate turning from sin in repentance and coming to Christ in faith. They describe the same person in the same action, but from different perspectives.” 
So then, what is repentance? Repentance is a gift that God grants a sinner, by means of the Holy Spirit, in which the individual comes to the realization that they have sinned; they are filled with remorse and repulsion concerning that sin, and then they renounce the sin by turning from it to God. Repentance is necessary for salvation and is to be practiced throughout the Christian life. In a series of future posts, I would like to look in the matters concerning the components of genuine repentance, the necessity of repentance, the freedom of repentance and the practice of daily repentance.
 Faith and Repentance by Sinclair Ferguson