@ghost-of-a-duke said
I wonder what the shelf life is for myrrh and if it would still be viable when it was required?
Some thoughts:
I am speculating that the myrrh mentioned in the New Testament of the Bible that was presumably brought by the nomadic wise men from the East was in resin form and burned.
The OP makes the correlation between the gift of myrrh and the funerary processes during Jesus’ time. Both Myrrh and Frankincense were used in the process of mummification. If the wise men were nomadic, similar to ancient Sufi tradition, rather than royalty (on a side note, it is common even in modern times for Sufis to refer to each other as royalty, so it is easy to understand the confusion in translation and tradition), they may well have combined their prophetic scholarship with their access to marketable goods.
It would also make sense that these gifts had their origins in Egypt as there is reason to believe that Jesus’ genealogy traces back through the Egyptian woman Asinath, whom Joseph (of the many colored coat) took to wife. It also makes sense when one considers that Mary and Joseph fled to Egypt where they likely had family...
As to the resins, there have been resins found in ancient tombs and which are still viable. It’s possible that they were used to burn rather than as internal preservative such that we think of when we consider modern embalming processes...Also, both myrrh and frankincense were thought to have restorative qualities which point to the concept of resurrection..
As to the gold, well...what young parents wouldn’t need money, especially after both having another mouth to feed exactly during tax season 😉, but I also think it points to the prophesies death of Jesus as a “down payment” if you will on funeral arrangements which were costly enough that in the end someone else came forward to pay...one Joseph of Arimathea...
Here’s an interesting article I found about what was found in an Egyptian tomb and mentions myrrh..
https://www.spurlock.illinois.edu/exhibits/online/mummification/materials.html