Wayne Grudem, Systematic Theology, Zondervan, 1994, p. 695.
Therefore, any genuine gospel proclamation must include an invitation to make a conscious decision to forsake one’s sins and come to Christ in faith, asking Christ for forgiveness of sins. If either the need to repent of sins or the need to trust in Christ for forgiveness is neglected, there is not a full and true proclamation of the gospel.
Wayne Grudem, Systematic Theology, Zondervan, 1994, p. 695.