Midrash su Salmi 68:25

The minim questioned {R. Ishmael} [R. Simlay].¹⁸yBer. 9:1 (12d); Gen. R. 8:9; Deut. R. 2:13; Tanh., Lev. 7:4. They said to him: How many deities created the world? He said to them: Let us, me and you, inquire of the Torah. They said to him: See, it written (in Josh. 24:19): FOR … HOLY GODS.¹⁹While “God” in the Bible is commonly plural, here the adjective “holy” is plural as well. He said to them: Read the rest of the verse, < where > "they" is not used but HE.²⁰Thus the text reads literally: FOR HE IS HOLY GODS. R. Berekhyah said in the name of R. Abba the Edomite: Why is HOLY plural (in Josh. 24:19)? Because he is holy in all categories of holiness. R. Aha bar Hanina said: In regard to the Holy One, his way is in holiness; he processes in holiness; he is seen in holiness; his speech is in holiness; the uncovering of his arm is in holiness; [he is beautiful and glorious in holiness]. His way is in holiness. Where is it shown? Where it is stated (in Ps. 77:14): YOUR WAY, O GOD, IS IN HOLINESS (i.e., in the Holy Place, the Temple). He processes is in holiness. Where is it shown? Where it is stated (in Ps. 68:25): THE PROCESSIONS OF MY GOD, MY KING, ARE IN HOLINESS. He is seen in holiness, as stated (in Ps. 63:3): SO I HAVE BEHELD YOU IN HOLINESS (i.e., in the Holy Place). His speech is in holiness, as stated (in Ps. 60:8): GOD SPOKE IN HIS HOLINESS (Holy Place). The uncovering of his arm is in holiness. Where is it shown? Where it is stated (in Is. 52:10: THE LORD HAS UNCOVERED HIS ARM OF HOLINESS. He is beautiful and glorious in holiness. Where is it shown? Where it is stated (in Exod. 15:11): WHO IS LIKE YOU AMONG THE GODS, O LORD, < GLORIOUS IN HOLINESS >? Hence < the plurals > (in Josh. 24:19): FOR HE IS HOLY GODS, in < the sense > that he is holy in all types of holinesses. < The minim > said to him: But he caused to be written (in Gen. 1:1): IN THE BEGINNING GOD (in the plural) CREATED. He said to them: < The plural form of > "created" is not written here, but CREATED < in the singular to agree with the singular subject >.