The Song of Songs is the first of the five Megilloth—the Festival Scrolls—and is associated with the celebration of Passover in Jewish tradition. The title “The Song of Songs” is a translation of the first two words (שִׁיר הַשִּׁירִים, shir hashshirim) from the book’s superscription in the Hebrew Bible. This construction expresses a superlative and declares this “song” to be the greatest song, unequaled by any other. The book bears the name “Song of Solomon” in most English versions and “Canticles” in Catholic versions.
The Song is unique from other biblical texts because it contains no explicit reference to God. A possible exception is found in Song 8:6, where “Yah” (יָה, yah) is suffixed to the word “flame” (שַׁלְהֶבֶת, shalheveth). However, this use of the short form of the divine name is more likely a superlative (i.e. “a mighty flame”; Joüon and Muraoka, Grammar of Biblical Hebrew, 492).
—Faithlife Study Bible, Lexham Press