Kabbalah zu Tehillim 68:5

Another explanation for, "Happy is the man, whose strength is in You." Strength as in "Hashem gives strength to His people" (Tehilim 29:11), that it is incumbent on a man to be occupied in studying Torah for the name (sake) of the Holy One, blessed be He. For whoever is occupied in the Torah, but does not care for its name, would have been better never born. What is meant by the verse, "in whose heart are Your highways (Heb. מְסִלּוֹת)?" It is as in the verse, "extol (Heb. סוֹלוּ) Him who rides upon the clouds; Yah is His name" (Tehilim 68:5), that when he studies the Torah, extolling the Holy One, blessed be He, and glorifying and extolling Him throughout the world.