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)

10017. 'And the priesthood shall be theirs' means the stages, following one after another, of the Lord's work of salvation. This is clear from the meaning of 'the priesthood' or 'the priestly office' as that which is representative of the Lord's whole work of salvation, dealt with in 9809. The reason why the stages following one after another is meant is that the priesthood of Aaron's sons is the subject here, and his sons represent the things which emanate and so follow in order one after another, 9807. The situation in all this is that the priesthood which Aaron represents consists in the work of saving those who are in the Lord's celestial kingdom, this kingdom being the proper meaning in the Word of 'a kingdom of priests'. But the priesthood which Aaron's sons represent consists in the work of saving those who are in the Lord's spiritual kingdom emanating directly from His celestial kingdom. From this it is evident that 'the priesthood' is used in the present instance to mean the stages, following one after another, of the Lord's work of salvation. But the priesthood which the Levites represent consists in the Lord's work of salvation at a further stage.

[2] There are three realities which follow one another in order. These are the celestial, which is the good of love to the Lord; the spiritual, which is the good of charity towards the neighbour; and the natural springing from these, which is the good of faith. Since these three are realities which follow one another in order there are also three heavens, and in them the types of good follow in that order. The work of saving those with whom celestial good exists is represented by Aaron's priesthood; but the work of saving those with whom spiritual good exists is represented by the priesthood of Aaron's sons, and the work of saving those with whom the natural good springing from these exists is represented by the priesthood of the Levites. And since the things following one another in order emanate from the good of love to the Lord, which is represented by Aaron and his priesthood, it is said of the Levites that they were given to Aaron. For things which emanate belong to that from which they emanate; such emanations or stages following one after another owe their very existence to that source, as accords with what has been stated a little above in 10011. The fact that the Levites were given to Aaron and his sons to perform priestly duties under them, see Numbers 3:1-end.