Adam said to them: What (is this), ye creatures! Why are ye come to prostrate yourselves before me? Come, I and you, let us go and adorn in majesty and might, and acclaim as King over us the One who created us. If there be no people to acclaim the king as king, the king acclaims himself. If there be no people to praise the king, the king praises himself. In that hour Adam opened his mouth and all the creatures answered after him, and they adorned in majesty and might and acclaimed their Creator as King over themselves, and they said, "The Lord reigneth, he is apparelled with majesty" (Ps. 93:1).
All Creatures Bow Before Adam in the Garden
Pirkei DeRabbi Eliezer 11:10