Psalm 23 is undoubtedly the most well-known and well-loved of all the psalms, with its illustration of the Lord as our shepherd. The shepherd's care for his sheep is, internally, describing the things that the Lord does for us in our spiritual journey.

As the psalm unfolds we hear about the Lord’s work for us, during states in our lives when we could be unsure and afraid, and of the Lord’s provision for us. Gradually the psalmist confirms his trust in the Lord’s guidance and declares the many blessings the Lord brings.

This psalm of six verses would surely have been known and loved by the Lord during his life in the world. It would have, for him, been a statement of faith in his purpose to overcome evil and glorify his humanity. Jesus, in states where his human heredity was strong in his mind, would have regarded his own divinity as his shepherd, and seen it as his anchor and provider. For us, spiritually, the same parallel applies -- that our faith in the Lord is to be our trust and guide at all times.

The shepherding care in verses 2 and 3 speaks about how the Lord leads us into acquiring new truths that bring heavenly peace and rest for us. Our state is lifted up and we live in goodness because we understand that this is the divine quality that God wishes for us to live by. (See Apocalypse Explained 375 and Arcana Caelestia 3696)

The valley of the shadow of death describes our states of being afraid, and of not seeing the Lord with us, during which our mind can be filled with disturbing and mocking thoughts. But we know that the Lord is there with us nonetheless. The “rod” and “staff” represent the power of the Lord’s truths for us to use; a rod - used actively to guard the sheep - stands for spiritual truths, and a staff is leaned on, representing natural truths or truths to do with life.”

(Apocalypse Explained 727)

With the provision of truth from the Lord, the psalm shifts to the picture of the bounteous table which truth brings to us as our spiritual nourishment and satisfaction. Our head anointed with oil has many associations of being the Lord’s chosen, of being loved and blessed by the Lord, and of how our mind with its understanding receives love and good to make it full of heavenly joy. “My cup runs over” means the unknown extent of the truths of the Word and the blessings of the Lord. (Apocalypse Explained 727)

The final verse is put in terms of our full conviction of being in the Lord for ever and in all the days of our lives. What we experience and say in terms of time and duration spiritually means what is certain, perpetual and to all eternity. The ‘house of the Lord’ is heaven. (Arcana Caelestia 650)

6775. 'And the priest of Midian had seven daughters' means holy things belonging to that Church. This is clear from the meaning of 'a priest's daughters' as things that belong to the Church, for 'a daughter' means a Church, see 2362, 3963, 6729, and 'a priest' the good of love, 1728, 3670, 6148, so that 'a priest's daughters' means a Church so far as its good is concerned; from the meaning of 'Midian' as people who are guided by the truths that go with simple good, dealt with just above in 6773; and from the meaning of 'seven' as that which is holy, dealt with in 395, 433, 716, 881, 5265, 5268. Thus 'the priest of Midian had seven daughters' means holy things belonging to the Church among those who are guided by the truths that go with simple good. The people said to be governed by simple good are those who keep up the external practices of the Church and who in simplicity take the Word literally, each one believing it according to his own understanding. They also lead lives that accord with what they believe, and so are governed by good, depending on the nature of that good, which is determined by the truths that guide them. That good brings an internal dimension of the Church to these people, but because they are not guided by truths of a more internal kind, the good entering in becomes something general and accordingly vague, since spiritual light is unable to fall on particular aspects and thereby illuminate things distinctly. The kind of people spoken of here have heaven granted to them in the next life as determined by the nature of their good, which depends on their truths. People such as these are meant here by 'Midian'; but properly speaking they are those outside the Church who lead a good life in keeping with their type of religion.