Isaiah 59:21 - American Standard Version (1901)

And as for me, this is my covenant with them, saith Jehovah: my Spirit that is upon thee, and my words which I have put in thy mouth, shall not depart out of thy mouth, nor out of the mouth of thy seed, nor out of the mouth of thy seed’s seed, saith Jehovah, from henceforth and for ever.

More versions

King James Version (Oxford) 1769

As for me, this is my covenant with them, saith the LORD; My spirit that is upon thee, and my words which I have put in thy mouth, shall not depart out of thy mouth, nor out of the mouth of thy seed, nor out of the mouth of thy seed's seed, saith the LORD, from henceforth and for ever.

Amplified Bible - Classic Edition

As for Me, this is My covenant or league with them, says the Lord: My Spirit, Who is upon you [and Who writes the law of God inwardly on the heart], and My words which I have put in your mouth shall not depart out of your mouth, or out of the mouths of your [true, spiritual] children, or out of the mouths of your children's children, says the Lord, from henceforth and forever. [Jer. 31:33; Rom. 11:26, 27; Gal. 3:29; Heb. 12:22-24.]

Common English Bible

As for me, this is my covenant with them, says the LORD. My spirit, which is upon you, and my words, which I have placed in your mouth won’t depart from your mouth, nor from the mouths of your descendants, nor from the mouths of your descendants’ children, says the LORD, forever and always.

Catholic Public Domain Version

This is my pact with them, says the Lord. My Spirit is within you, and my words, which I have put in your mouth, will not withdraw from your mouth, nor from the mouth of your offspring, nor from the mouth of your offspring's offspring, says the Lord, from this moment, and even forever.