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)

96. The correspondence of heaven's two kingdoms with the heart and lungs is the general correspondence of heaven with the human being. The less general correspondence, though, is with the specific members, organs, and viscera, and we need to note what this is like as well.

People who are in the head in the universal human that is heaven are supremely involved in everything good. In fact, they are in love, peace, innocence, wisdom, intelligence, and therefore in delight and happiness. These flow into the head and into the components of the head in us, and correspond to them.

People who are in the chest of the universal human that is heaven are involved in the qualities of thoughtfulness and faith, and also flow into our chests and correspond to them. However, people who are in the groin of the universal human or heaven and in the organs dedicated to reproduction are in marriage love.

People who are in the feet are in the outmost heaven, which is called "natural-spiritual good." People who are in the arms and hands are in the power of what is true because of what is good. People who are in the eyes are in understanding; people who are in the ears are in attentiveness and obedience; people who are in the nostrils are in perception; people in the mouth and tongue in conversing from discernment and perception.

People who are in the kidneys are in truth that probes and discriminates and purifies; people in the liver, pancreas, and spleen are in various aspects of purification of what is good and true; and so on. They flow into the like parts of the human being and correspond to them.

The inflow of heaven is into the functions and uses of these members, and since the uses originate in the spiritual world, they take form by means of elements characteristic of the natural world and thus make themselves known in their effects. This is the origin of correspondence.