As we begin reading Sefer Vayikra, we delve right into the sacrificial service which was conducted in the Mishkan. Regarding the meal offering, the korban Mincha, Hashem instructs Moshe in Perek ב, Pasuk יא :
כָּל-הַמִּנְחָה, אֲשֶׁר תַּקְרִיבוּ לַה' לֹא תֵעָשֶׂה, חָמֵץ: כִּי כָל-שְׂאֹר וְכָל-דְּבַשׁ, לֹא-תַקְטִירוּ מִמֶּנּוּ אִשֶּׁה לַיקוק
"All meal offerings brought near before Hashem should not be prepared leavened, for you shall not cause to go up in smoke from any leavening or any honey as a fire-offering to Hashem."
This pasuk teaches that the Mincha offering must be simple flour without any foreign ingredient in it which would be added to enhance the basic make up of the Korban Mincha.
However, while nothing is to be added to enhance the flavor, two pesukim later, the Torah informs us that there needs to be an addition to the Mincha offering: SALT.
The Pasuk says:
וְכָל-קָרְבַּן מִנְחָתְךָ, בַּמֶּלַח תִּמְלָח, וְלֹא תַשְׁבִּית מֶלַח בְּרִית אֱלֹקיךָ, מֵעַל מִנְחָתֶךָ; עַל כָּל-קָרְבָּנְךָ, תַּקְרִיב מֶלַח
"Every meal offering should be seasoned with salt. You should not hold back on the salt on the covenant of Hashem to be lacking from your Mincha. With all your offerings, you should offer salt."
Here Bnei Yisrael are instructed that they must offer salt.
The Torah is explaining that here the honey or anything that sweetens is not allowed. But, salt, which enhances the innate flavors and brings out the flavors rather than masking them, is not only permitted, but, it is obligatory.
Rav Mordecai Gifter explains that salt enhances the natural taste that already exists in the food itself.
When bringing a korban as a form of service to Hashem, a person is looking to come closer to God and uncover one's true essence. This is a way to develop one's spiritual personality of becoming a true Eved Hashem (servant of God). This assists a person on their personal journey of spiritual development and connection to God and to others. To accomplish this, a person should try hard to not mask who he or she is. Rather, to work hard on representing his or her real self.
By commanding us to bring the salt, Hashem is reminding us, encouraging us and facilitating our commitment to come close in this sacred service to God. Nowadays, even in the absence of korbanot, the message of becoming our best selves can serve to assist us in allowing our true person to surface, enabling a genuine service to HaKadosh Baruch Hu and deepening our self awareness and personal growth.