As you get into Greek, you will find that the grammar is not always correct. Sometimes, like in Revelation, the grammar can be explained by the fact that John is in an ecstatic state and the grammar irregularities enhance the message. But even in non-apocalyptic literature, you will find that the grammar rules are not always followed. This should not affect your view of inspiration. All good writers violate grammar, periodically, for effect, or for other reasons.