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.

923. 'And he offered burnt offerings on the altar' means all worship stemming from those goods and truths. This is evident from what has been stated up to now. Burnt offerings were the chief features of the worship of the representative Church, as at a later time were sacrifices. These will in the Lord's Divine mercy be dealt with later on. That burnt offerings taken as a whole mean representative worship is also clear from the Prophets, as in David,

Jehovah will send your help from the Sanctuary, and give you support from Zion. He will remember all your offerings, and accept your burnt offering as fat. Psalms 20:2-3.

And in Isaiah,

Whoever keeps the sabbath from profaning it, I will bring them to My holy mountain. Their burnt offerings and their sacrifices will be accepted on My altar. Isaiah 56:6-7.

Here 'burnt offerings and sacrifices' stands for all worship, 'burnt offerings' for worship stemming from love, 'sacrifices' for worship stemming from faith derived from love. As is common in the Prophets, internal things are here being described by those that are external.