And the one came not near the other all the night (Ex. 14:20)
As the Talmud relates, the ministering angels wanted to sing songs of praise as the Egyptians were drowning in the Red Sea. However, G-d stopped them by pointing out the inappropriateness of rejoicing at a time when "the work of My hands is drowning." An analogy is given of a serious yet necessary operation to save a patient's life. During the painful surgery, there is no room for rejoicing. Only after its successful completion can one begin to offer praise and speak of its benefits. (Yeshuot Malko)
Reprinted from Parshat Beshalach 5762/2002 edition of L’Chaim.