Psalm 121 opens with this much-loved line, 'I will lift up my eyes to the hills, from whence comes my help.' The whole psalm assures us of the Lord's continual help; He helps, holds us safe, keeps us, shades us, and preserves us.

Natural images and sensations are used to describe spiritual ones: our eyes and feet, sleep, shade, hills, sun, and moon. They remind us of the correspondences between the natural and spiritual planes of life, helping to express these higher ideas in familiar words.

Spiritually, our eyes represent our understanding. Hills are high places; we look up to them, and we can see long distances from their summits. When we lift up our eyes to the hills, we're consciously trying to elevate our minds to new levels of understanding. Note that here, we're not told to look up to majestic mountains, since they can sometimes be too far, too remote, from our daily life. We just need to look up to nearby hills, to raise our minds above our normal ways of thinking. In the Bible, hills represent good that comes from charity. That kind of good -- a love towards our neighbours - also turns us toward the Lord, who then can more readily deepen and infill that neighbourliness. (Apocalypse Explained 374[5])

Our feet are in contact with the ground, and they hold us up. They represent our natural life. The 'foot not to be moved' is our life's intention, to be standing firm with the Lord's support. (Heaven and Hell 96, 97)

To say that the Lord never sleeps is to state the obvious, as Divine influx must be perpetual to maintain all things. This an important reminder for us, though, because sometimes we feel that the Lord is not with us. However, the Lord is, in fact, always with us and is actually closer to us at such times. (See True Christian Religion 774)

Next, we see that the Lord's presence is active. He is our keeper and our shade. He continually knows what our state is, and provides and protects accordingly. He even withholds spiritual things from us at times, so that we don't spoil them. (See Arcana Caelestia 59[2], and 959 at the end.)

The word 'shade' gives us a good feeling that the Lord is over us, keeping us safe. It can also mean that we occasionally require shade — that is, less sight and clearness — for our own sake. (See Apocalypse Explained 401[34])

The sun and moon often represent the Lord's love and His truth. In this psalm, though, they are used in the opposite sense. They stand for our evil love of self and the false ideas that reinforce it - and those will harm us - unless we accept the Lord's power to constrain them.

At the end of this psalm the word 'preserve' is used three times to express holiness. The repetition is important. It represents our need for preservation in every conceivable way — from now to eternity - throughout our "going out and coming in" - the changing states in our lives. (See Arcana Caelestia 1050)

775. The situation with the people who make up the church en masse or taken collectively is much the same as with the person by himself or taken individually. People en masse or taken collectively are a church of many members; and the person by himself or taken individually is the church in each of those many members. It is in accordance with Divine order that there should be general and particular levels, co-existing in any thing you like to mention, and the particular levels could not otherwise come into or continue in existence. In this way there could not be any particular part within the human body unless there were general layers surrounding it. Particular parts in the human body are the viscera and each part of them; the general layers are the coverings which envelop not only the whole body, but also each of the viscera and each part of them. It is much the same in every animal, bird and worm, as well as in every tree, shrub and seed. Nor can strings or wind instruments produce any sound, unless there were a very general level, from which the individual notes derive the general sound which allows them to be produced. It is also similar with all the bodily senses, such as sight, hearing, smell, taste, and touch; and with all the inward senses which exist in the mind.

[2] These illustrations have been given to make it known that in the church too there are general and particular levels, as well as the very general ones. It is also intended to show that this is why the four churches have succeeded in order. This succession gave rise to the most general level of the churches as a whole, and one after another the general and particular level of each. In the human body too there are two very general levels which give rise to the existence of all the other general and particular levels. The two most general items in the body are the heart and the lungs, those in the spirit, the will and the understanding. On these two sets of items depend all the details of a person's life generally and particularly; without them these would fall apart and die off. It would be much the same with the whole heaven of angels and with the whole human race, in fact, with the whole created world, if everything in general, and the details in particular, were not dependent upon God, His love and His wisdom.