A 'month,' as in Genesis 29, signifies the end of an earlier state and the beginning of a following state, thus a new state. 'A month' signifies a full state.

(References: Arcana Coelestia 3814)

3766. 'In the field' means provided for the Churches. This is clear from the meaning of 'the field' as the Church as regards good, dealt with in 2971. In the Word the Church is meant by the expressions 'land', 'ground', and 'the field', though each has a different shade of meaning. The reason 'the field' means the Church is that like a field it receives the seeds of goodness and truth; for the Church has the Word, the source of those seeds. This also is why everything included in the field means some aspect of the Church, such as that which is sown, that which is harvested, standing grain, wheat, barley, and everything else. And each of these too has a different shade of meaning.