Talmud zu Jeschijahu 41:4

What is the seal of the Holy One, praise to Him? Rebbi Bevai in the name of Rebbi Reuben, “true.⁵¹Babli Šabbat 55a, in the name of R. Hanina, a midrash on 1K. 22:23.” What means “true”? Rebbi Abun said, that He is a Living Power and the King of this World. Rebbi Simeon ben Laqish said, א is the start of the alphabet, מ the middle,⁵²Since the Hebrew alphabet has 22 letters, the middle is between the 11th (k) and the twelfth (l) letter. and ת the end. To say, I, the Eternal, am First,⁵³Is. 41:4. I did not receive anything from another. Besides Me there is no supreme power,⁵⁴Is. 44:6. The verse probably should have been quoted three times. for I have no co-owner. And with the last, I shall be,⁵³Is. 41:4. I shall not in the future turn it over to anybody else.