It is evident from these scriptures that the great centralities of the gospel — the pre-existence of Christ, his incarnation, his atoning death, his resurrection from the dead — are expressed in the indicative mood. These great central facts of the gospel are not — indeed, they could not be — expressed in the imperative mood which denotes a command, a request, an exhortation; they are not — indeed, they could not be — expressed in the subjunctive mood which denotes that which is contingent, hypothetical, or prospective. No, these great central facts of the gospel are expressed in the Scriptures in the only mood that is consonant with them, namely, the indicative mood. Thus Machen’s observation, ‘Christianity begins with a triumphant indicative’, reveals the perceptiveness both of a grammarian and of a theologian.

John Carrick, The Imperative of Preaching: A Theology of Sacred Rhetoric, 10.