Isaiah 12:2

The Lord Jehovah - The word Yah read here is probably a mistake; and arose originally from the custom of the Jewish scribes, who, when they found a line too short for the word, wrote as many letters as filled it, and then began the next line with the whole word. In writing the word Jehovah , the line might terminate with Yah , the two first letters; and then at the beginning of the next line the whole word Yehovah would be written. This might give rise to Yah Yehovah . The Yah is wanting here in two of Dr. Kennicott' s MSS., in one ancient MS. of my own, and in the Septuagint, Vulgate, Syriac, and Arabic. See Houbigant and De Rossi.

My song - The pronoun is here necessary; and it is added by the Septuagint, Vulgate, and Syriac, who read zimrathi , as it is in a MS. Two MSS. omit Yah , see Houbigant, not. in loc. Another MS. has it in one word, zimrathyah . Seven others omit Yehovah . See Exodus 15:2, with Var. Lect. Kennicott.