Jump To ECM Entry Online Commentary Introduction
GC: There is coherent attestation with a broad A-related basis for a.
TP: The grave incoherence in the b attestation is probably due to the linguistic development which led to the replacement of ἐάν + subjunctive by αν + future tense in modern Greek.
 Cf. Introduction 4.3. This explains the instability of usage in the NT. Cf. BDF/BDR 380.3-4.