Arcana Coelestia#3949
3949. 'And Jacob came from the field in the evening' means the good of truth in a state of good, yet also in obscurity such as envelops the natural. This is clear from the representation of 'Jacob' as the good of natural truth, dealt with in 3669, 3677, 3775, 3829; from the meaning of 'the field' as the Church as regards good, dealt with in 2971, and so as good itself; and from the meaning of 'evening' as obscurity, dealt with in 3056, 3833.
Arcana Coelestia#3056
3056. 'At evening time' means a more obscure state at that time. This is clear from the meaning of 'time' as state, dealt with in 2625, 2788, 2837, and from the meaning of 'evening' as obscurity. For in the Word evening means the state which precedes the final period of a declining Church, the period called night, or else it means the initial state of a rising Church, the state called morning, see 2323. In both cases evening means that which is obscure, but here it is the obscurity which precedes the morning.