In general, birth order in the Bible reflects the progression of spiritual states, but the specifics of those states depends greatly on context: who the people in question are, and whether we’re talking about spiritual states as they flow to us from the Lord, or spiritual states as we advance through them to approach the Lord. For example, Esau was older than Jacob (by minutes, but it mattered), and as the elder represents a more internal spiritual state: the desire for good, and the ideas that flow from that desire. Jacob represents a more external state: the understanding of ideas that lead to good. The switched blessing, with Jacob getting the blessing Isaac meant for Esau, shows that to progress in life we need to put our understanding first for a while, though ultimately our loves will catch up and ultimately determine our true character. A similar thing happens when Jacob crosses his hands to give Ephraim, the younger of Joseph’s sons, the primary blessing over his older brother Manasseh. Both those cases describe blessings coming from the Lord, with the highest states coming from Him and extending down through lower states to get to us. There is a sort of opposite dynamic in the story of Leah and Rachel. There Jacob (representing the Lord himself, as a human, in His childhood) is advancing from more external states to more internal ones. In this case, then, the older daughter, Leah, represents a more external state which He had to work through to reach the more internal state represented by Rachael.

3146. 'And gave straw and fodder to the camels' means instruction in truths and goods. This is clear from the meaning of 'straw' as the truths present in the natural man, and from the meaning of 'fodder' as the goods there, dealt with above in 3114. Since these things are meant by 'straw and fodder' it therefore follows that 'giving straw and fodder' is giving instruction in truths and goods. The purpose of that freedom is this: Possessing the affection for truth and being stirred by that affection, a person may become instructed in such a way that truths are implanted deep within him - within the spiritual man or the soul - where they are joined to good, as may be seen from what has been shown regarding freedom in 2870-2893.

[2] This is the way in which faith - that is, truth which is the truth of faith made to take root; and unless it is coupled to good in the rational the truth of faith never receives any life, nor does any fruit develop from it. For everything called the fruit of faith is the fruit of that good which is the good of love and charity coming by way of truth which is the truth of faith. Unless spiritual warmth, which is the good of love, is actively present in spiritual light, which is the truth of faith, man would be like ground frozen stiff, as in wintertime, when nothing grows, let alone bears any fruit. For just as light devoid of warmth is totally unproductive, so is faith devoid of love.