Practicing bitachon and achieving tranquility of the soul is a constant skill that needs to be reinforced. When the sea split, says Rabbeinu Bachye, it split step by step and not all at once. It was an ongoing challenge much like the pandemic we find ourselves in. It is only knowing that Hashem is walking with us through the waters with each step that we can reach the other side with our connection to G-d deepened along the way