Isaiah 49.18
Septuagint

zw egw, legei kurioV

New Testament - Romans 14.11

zw egw, legei kurioV

Septuagint

As I live, saith the Lord

New Testament

As I live, saith the Lord

Masoretic Text

As I live, saith Jehovah

Comments:  The NT, the LXX and the MT agree.