“God, in Your strength the king will rejoice, and he will greatly delight in Your salvation.” (Tehilim, 21:2) “Strength” signifies words of Torah. “The king will rejoice”—“the king” is the Torah scholar, for “the sages are the (real) kings.”¹ The Torah gives him strength to stand against and conquer the entire world. This is “the king will rejoice.” “He will greatly rejoice in Your salvation,” however, represents a place where there is a deficiency from his birth, from his very inception, as it is written (Yeshaya, 48:8), “you are called a criminal from the womb.” He then needs salvation from God to renew his life and heal the events of the past.⁴, first selection, for more on this idea. This is called salvation and without it he stands perplexed. This is “in Your salvation,” meaning that if he merits salvation then his deficiency will be healed, and then “he will greatly delight.”

footnotes: ¹ see Eyts Yosef on Ester Rabba, 10:1 ⁴ See the Mei HaShiloach, Parshat Vayeilech