ייִדישער מחשבֿה אויף ישעיהו 44:8

All the evidence thus testifies on His unity, and negates the attributing to Him of any plurality, association or similarity, as G-d Himself declares: "Is there a god besides me?" (Isaiah 44:8), and "I am the First and I am the Last" (ibid 44:6), and "My hand has laid the foundations of the earth, and My right hand has spread out the heavens" (Isaiah 48:13), and "a just G-d and a Savior; there is none besides Me" (Isaiah 45:21).