From Murray's Redemption: Accomplished and Applied
The sufficiency of his saviourhood rests upon the work he accomplished once for all when he died upon the cross and rose again in triumphant power. But it resides in the efficacy and perfection of his continued activity at the right hand of God. It is because he continues ever and has an unchangeable priesthood that he is able to save them that come unto him and to give them eternal life. When Christ is presented to lost men in the proclamation of the gospel, it is as Saviour he is presented, as one who ever continues to be the embodiment of the salvation he has once for all accomplished. It is the Saviour himself and therefore salvation full and perfect. There is no imperfection in the salvation offered and there is no restriction to its overture; it is full, free, and unrestricted. And this is the warrant of faith.
Repentance we must not think of as consisting merely in a change of mind in general; it is very particular and concrete. And since it is a change of mind with reference to sin, it is a change of mind with reference to particular sins, sins in all the particularity and individuality which belong to our sins. It is very easy for us to speak of sin, to be very denunciatory respecting sin, and denunciatory respecting the particular sins of other people and yet not be penitent regarding our own particular sins. The test of repentance is the genuineness and resoluteness or our repentance in respect of our own sins, sins characterized by the aggravations which are peculiar to our own selves.
The broken spirit and contrite heart are abiding marks of the believing soul. As long as sin remains there must be the consciousness of it and this conviction or our own sinfulness will constrain self-abhorrence, confession, and the plea of forgiveness and cleansing. Christ's blood is the laver of initial cleansing but it is also the fountain to which the believer must continuously repair. It is at the cross of Christ that repentance has its beginning; it is at the cross of Christ that it must continue to pour out its heart in the tears of confession and contrition. The way of sanctification is the way of contrition for the sin of the past and of the present.