Arcana Coelestia # 4686
4686. 'Behold, we were binding sheaves in the middle of the field' means that they were teaching from doctrine. This is clear from the meaning of 'a sheaf' as doctrine, and consequently of 'binding sheaves' as teaching from doctrine, dealt with below; and from the meaning of 'a field' as the Church, dealt with in 2971, 3766, 4440, 4443. 'The middle of the field' means the more internal part of the Church and so those who are governed by faith that is grounded in some charity - 'the middle' meaning in the internal sense that which is more internal and that which is inmost, 1074, 2940, 2973. For every Church has members in the middle, that is, those who are its inmost ones. They consist of those governed by charity, or in this case by faith grounded in some charity. With these the Lord is present because the Lord is present within charity and through charity within faith, 4672. It is also evident that these people are meant from what follows - from the description that Joseph's sheaf arose and the remaining sheaves gathered around it. By 'Joseph's sheaf' is meant doctrine drawn from the Lord's Divine Truth.
[2] The reason 'a sheaf means doctrine is that 'a field' means the Church, as has just been stated, while the grain-crop in the field means truth present in the Church. Thus a sheaf of the crop means doctrine containing truth. 'Sheaves' has a similar meaning in David,
Those who sow in tears will reap with singing; he who indeed goes forth weeping, carrying a cast of seed, will indeed come with singing, carrying his sheaves. Psalms 126:5-6.
This refers to people who have been in spiritual captivity and then have been set free. 'Carrying a cast of seed' stands for instruction in truths, 'coming with singing' for the gladness that results from the affection for truth, 'carrying sheaves' for matters of doctrine belonging to that truth.
Arcana Coelestia # 2971
2971. 'The field and the cave which was in it' means as regards the good and truth of faith. This is clear from the meaning of 'the field' as the Church and also good itself which constitutes the Church (that which is celestial - or good that stems from love to the Lord and charity towards the neighbour - is compared to 'the ground' as well as to the field, and is actually called these, because that which is celestial - or good - is the recipient of the truths of faith; and these truths are compared to and are also actually called 'seeds'); and from the meaning of 'a cave' as the truth of faith which is enveloped in obscurity, dealt with in 2935. It is said to be in obscurity because it is with spiritual people, see 1043, 2708, 2715.