R Yaakov Kamenetsky, The Stone Ed. The Chumash p.552
During the second day of creation, God created a division between the heavenly waters above the firmament and the earthly waters below (Genesis 1:7). The Midrash records that the earthly waters protested that they, too, wished to be close to God. To comfort them, God made a covenant that the water would have a share in the temple service, for salt, which comes from the sea, would be placed on sacrificial parts that go on the Altar, and fresh water would be poured on the Altar every Sukkot.
If the salt was assuaged the wounded feelings of the lower waters as it were, then why wasn't water poured on the altar with every offering? The answer maybe found in how salt is taken from the sea. The water is boiled off or allowed to evaporate, leaving the salt behind. Thus, even the "lower water" rises to heaven in the form of condensation. The only component that is "condemned to remain" in the lower world is its salt, and in this verse God declared that it, too, is needed for His service. This is a lesson to all people in their everyday lives. A Jew can and should find spirituality not in the obviously holy and heavenly pursuits, but even in his seemingly mundane activities.
The salt of the covenant as an allegory finds company in Yeshua's parable of the salt and the light.
Commentary on Matthew 5:13-16
Torah Club Volume 4 The News of the Messiah, First Fruits of Zion
Yeshua calls His disciples the salt of the earth. Just like salt adds the flavor to food, we are to add the flavor to the earth. A little bit of salt can make an otherwise bitter taste palatable. We disciples are to be the force for good and righteousness that balances the bitterness and ugliness of the world and all that is evil and wrong and wicked. Salt is used as a preservative. We are to be that which preserves the world; that which repairs the world.In the same way He tells us that we are the light of the world. One little lamp can dispel a lot of darkness. Just as a lamp on a stand gives light to the whole room, so too we are to be the force that dispels the darkness from the earth.
In Judaism, the concept of preserving the world (like salt) and illuminating the darkness (like light) is expressed as tikun olam, fixing the world. As disciples of Yeshua we are to be busy fixing the world, preserving and repairing a broken and hurting world.
But He also warned us not to let our lamp be concealed under a bowl. If we do, our light will be useless. He warned us not to lose our salty flavor. If we do, we will be useless. Consider the following comment from the Talmud. The Sages asked Rabbi Yehoshua, “When salt becomes unsavory, how can it be made salty?” He replied, “With the afterbirth of a mule.” They asked, “And does a mule have an afterbirth?” He replied, “And can salt become unsavory?” (Berakhot 8b)
Rabbi Yehoshua cannot resist taking a little poke at the Gospel. Mules don’t reproduce. They are sterile and have no afterbirth. In the same way it is impossible for salt to lose its saltiness. Rabbi Yehoshua pokes a little fun at our expense, but his point is that salt cannot lose its salinity. His point is also Yeshua’s point. Salt cannot lose its saltiness... but we can! In our job as disciples, that is as salt of the earth, it is possible, even likely, that we will lose the essence of character that makes us salty. What good would unsalty salt be? When we lose our saltiness, we are worthless to the kingdom, no longer good for anything. So how do we stay salty? What is our saltiness?
In the two analogies, salt and light correspond. Being the salt of the earth is equivalent to being the light of the world. So too, losing our saltiness is equivalent to hiding our light under a bowl. What is the saltiness? What is the light? How can we be salty? How can we give light to everyone in the house?
The answer is in verse 16 where He says, ”in the same way, let your light shine before men, that they may see your good deeds and praise your Father in heaven.
Could it really be so simple? Our saltiness (that we are in danger of losing and therefore being worthless to the kingdom) and our light (that we are in danger of concealing and therefore being worthless to the kingdom) are our good deeds, our mitzvot (commandments).
Salt = Disciples
Saltiness = Obedience to the commandments
Lamp = Disciples
Light = Obedience to the commandmentsIn Judaism the term “good deeds” is always idiomatic for the commandments of Torah. If we keep the commandments, we will keep our saltiness; if we keep the commandments, our light will shine before men.