The Mystery of the Blue String
Rabbi Meir used to say: What is so special about techeilet (blue/green dye) compared to all other dyes that caused it to be chosen for coloring tzitzit? It is because the color of techeilet is similar to the sea, and the sea is similar to the sky, and the sky is similar to (G-d’s) throne of glory, regarding which it is written, “And under His feet was like sapphire brickwork, and like the essence of Heaven in purity (Shemot 24:10). This verse indicates that the sky is like sapphire. And it is also written, “Like the appearance of sapphire stone is the likeness of the throne (Yechezkel 1:26). Thus,
Rashi explains that when one looks at the blue string on the tzitzit he will be reminded of
A Deeper Look
The above-quoted teaching from Rabbi Meir presents us with a difficulty. The water in the sea is not actually the color of techeilet. It is colorless. It appears to be techeilet (at least in part) because it reflects the color of the sky. That said, there seems to be an unnecessary step in the comparisons made above. Why look first to the sea and then to the sky, when one can simply look directly at the sky, which is the source for the comparison to techeilit?
The techeilet string alludes to the soul, a part of the Divine above, which was carved out from under