Water generally represents “natural truth,” or true concepts about day-to-day matters and physical things. Since all water ultimately flows into the seas, then, it follows that a sea represents a huge agglomeration of such natural truths -- usually all of the natural truth a person has, or all the natural truth a church has. Water in the sea mixes freely, and is easily stirred up by winds and currents. This is also true of the concepts we hold about natural things -- they are not all related to each other, and when relationships do exist they usually can change without damaging the concepts themselves. Many of the concepts are easily disputed, and arguments can arise like waves on the ocean -- generally with little effect other than a mixing of waters. But the sea also offers great bounty. We draw fish from it (spiritual food), float ships (doctrinal systems) on it, bathe in it (using true concepts to purify ourselves), and the water that evaporates from it and falls as rain (purer forms of truth that can attach to desires for good) makes life possible.

8510. 'That some of the people went out to gather, and did not find' means that they wished to acquire it, but none was given. This is clear from the explanation above in 8505. The explanation there shows what actions springing from the truth of faith are and what those springing from the good of charity are. That is to say, it shows that a person whose actions spring from the truth of faith does not as yet have the order of heaven present in himself, whereas one whose actions spring from the good of charity does have it. For, according to order, when the Lord leads a person He does so through his will, consequently through good since this belongs properly to the will. In that case his understanding is subservient, and so is truth since this belongs properly to the understanding. When this state exists it is the sabbath, for then there is rest for the Lord; and the state comes into being once good has been joined to truth. That this state is the Lord's rest may be recognized from the statement that after six days of creation and labour Jehovah or the Lord rested on the seventh day from all His work, Genesis 2:2. This state is heaven's state, which explains why heaven itself is called the sabbath, and that in heaven the sabbath is perpetual. For the creation story in Genesis 1 serves to mean the new creation, which is regeneration, and the six days in the story serves to mean temptations and conflicts, see the explanations at Genesis 1, 2.