In the Christmas story, the wise men bring gifts to the Lord: gold, frankincense and myrrh.

The gold is listed first, because it is the inmost - signifying good, e.g. the good that we do when we love the Lord and the neighbor.

The frankincense is next. It signifies rational truth, which is the set of true ideas that we know, not about external things like cars or cooking, but about what is really good, and what is really true.

These rational truths are built on earlier knowledges that we learn, before we have really made them our own. Those early knowledges about spiritual things - often learned in childhood - are represented by the myrrh.

In a way, these gifts are really a reciprocation. We can't actually give them to the Lord until the Lord has given them to us. We necessarily start out by learning and doing the Lord's law (myrrh). The Lord can then call up those memories to become rational truths (frankincense). Then, over time, and with effort, those truths can be transformed into good (gold). The wise men from the East had gone through this process of learning and becoming vessels that could receive truths and goods. They were able to perceive the Lord's birth, and find him, and bring gifts to him.

17. These approximate or general explanations of the preceding words, not being presented in a continuous series, will appear disconnected; and this must be the case when each word or phrase is expounded separately, and the internal sense is immediately joined to the literal sense, which is diverse from it, and each is viewed by itself. But nevertheless, with angels, who are in the internal sense, this is not so. They do not see the sense of the letter, nor do they know anything about it; they see only the internal sense; and because they see this in the light of heaven, they see it in such a series and connection, and also in such abundance and thence in such wisdom, as cannot be expressed and described in human words. The ideas of angels, which are spiritual, also conjoin all things in a wonderful manner, and comprehend more than man can include or express in his ideas, which are natural, even as to a thousandth part thereof.