Rabbeinu Bechaye writes that פרשת בשלח is one of the first Parshiot that teaches us the concept of נסיונות, or tests.
The soul that Hashem breathed into us is pure and holy. However, it sometimes becomes tarnished by our bad choices or indiscretions. Purifying the soul is compared to polishing gold and silver. After polishing, the gold and silver sparkle again.
Rabbeinu Bechaye says that נסיונות are the polish for our souls. When food ran out one month after the exodus, the Manna became the food for the Jewish people the entire forty years in the desert.
Every day was a test. If the מן fell today, what was the guarantee that it would fall tomorrow? The Rabbis add that one who has food to eat today, but asks what he will eat tomorrow, is a person of small faith.
We need to embrace the נסיונות that Hashem sends our way. It’s a good idea to have our souls polished. Shabbat Shalom