This comes from the Blue Diamond Nut company web page
"Bible stories make numerous references to almonds as an object of value and symbol of hope. In Genesis 43:11, for example, a famine in Canaan (around 1500 B.C.) prompts Jacob to ask his sons to go to Egypt to buy grain. He told them, "Take some of the choice fruits of the land in your bags, and carry down to the man a present, a little balm and a little honey, gum, myrrh, pistachio nuts, and almonds." In Numbers 17, "The Lord said to Moses, 'Speak to the people of Israel, and get from them rods, one for each father's house...twelve rods...And the rod of the man whom I choose shall sprout'...And on the morrow Moses went into the tent of the testimony; and behold,the rod of Aaron...had sprouted and put forth buds, and produced blossoms, and it bore ripe almonds."
In Jeremiah 1:11 a rod of almond is seen as a sign of rebirth: "And the word of the Lord came to me, saying, 'Jeremiah, what do you see?' And I said, 'I see a rod of almond.' Then the Lord said to me, 'You have seen well, for I am watching over my word to perform it.'"
Almond blossoms figured prominently in the design of the ancient Hebrew seven-branched lampstand (Menorah). When Moses was instructed to build a tabernacle in the desert he was told to furnish it with holy vessels, including gold lampstand. According to the Torah, he was instructed to "make a lampstand of pure gold...six branches shall issue from its sides...there shall be...cups shaped like almond blossoms, each with a calyx and petals."
Here is another good link for information regarding the symbolism around almonds.
http://arthistory.suite101.com/article.cfm/plant_symbols_in_christian_art
This would lead me to wonder if this letter writer doesn't know something about Christianity.