Hearken unto me, Jacob, and [thou] Israel, my called. I [am] HE; I, the first, and I, the last.
References for Isaiah 48:12
Yea, my hand hath laid the foundation of the earth, and my right hand hath spread abroad the heavens: I call unto them, they stand up together.
All ye, gather yourselves together, and hear: which among them hath declared these things? He whom Jehovah hath loved shall execute his pleasure on Babylon, and his arm [shall be on] the Chaldeans.
I, [even] I, have spoken; yea, I have called him; I have brought him, and his way shall be prosperous.
Come near unto me, hear ye this: I have not spoken in secret from the beginning; from the time that it was, there am I; and now the Lord Jehovah hath sent me, and his Spirit.
Thus saith Jehovah, thy Redeemer, the Holy One of Israel; I [am] Jehovah thy God, who teacheth thee for [thy] profit, who leadeth thee in the way that thou shouldest go.
References for Isaiah 48:17
Oh that thou hadst hearkened to my commandments! Then would thy peace have been as a river, and thy righteousness as the waves of the sea;
and thy seed would have been as the sand, and the offspring of thy bowels like the gravel thereof: their name should not have been cut off nor destroyed from before me.
Go ye forth from Babylon, flee from the Chaldeans, with a voice of singing; declare, cause this to be heard, utter it to the end of the earth; say ye, Jehovah hath redeemed his servant Jacob.
And they thirsted not when he led them through the deserts; he caused the waters to flow out of the rock for them; yea, he clave the rock, and the waters gushed out.
There is no peace, saith Jehovah, unto the wicked.