WSC Q.87: What is repentance unto life?
Repentance unto life is a saving grace, (Acts 11:18) whereby a sinner, out of a true sense of his sin, (Acts 2:37–38) and apprehension of the mercy of God in Christ, (Joel 2:12, Jer. 3:22) doth, with grief and hatred of his sin, turn from it unto God, (Jer. 31:18–19, Ezek. 36:31) with full purpose of, and endeavour after, new obedience. (2 Cor. 7:11, Isa. 1:16–17)
WLC Q.76: What is repentance unto life?
Repentance unto life is a saving grace, (2 Tim. 2:25) wrought in the heart of a sinner by the Spirit (Zech. 12:10) and word of God, (Acts 11:18,20–21) whereby, out of the sight and sense, not only of the danger, (Ezek. 18:28,30,32, Luke 15:17–18, Hos. 2:6–7) but also of the filthiness and odiousness of his sins, (Ezek. 36:31, Isa. 30:22) and upon the apprehension of God’s mercy in Christ to such as are penitent, (Joel 2:12–13) he so grieves for (Jer. 31:18–19) and hates his sins, (2 Cor. 7:11) as that he turns from them all to God, (Acts 26:18, Ezek. 14:6, 1 Kings 8:47–48) purposing and endeavouring constantly to walk with him in all the ways of new obedience. (Ps. 119:6,59,128, Luke 1:6, 2 Kings 23:25)
WCF 15.1.
Repentance unto life is an evangelical grace, (Zech. 12:10, Acts 11:18) the doctrine whereof is to be preached by every minister of the Gospel, as well as that of faith in Christ. (Luke 24:47, Mark 1:15, Acts 20:21)