Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
KJV

Isaiah 48:7

They are created now, and not from the beginning; even before the day when thou heardest them not; lest thou shouldest say, Behold, I knew them.

Parallel Translations

LXXView canonical →
Now they come to pass, and not formerly: and thou heardest not of them in former days: say not thou, Yea, I know them.
Brenton's Septuagint Translation
LXX2012View canonical →
Now they come to pass, and not formerly: and you heard not of them in former days: say not you, Yes, I know them.
Septuagint in American English (2012)
WEBView canonical →
They are created now, and not from of old. Before today, you didn’t hear them, lest you should say, ‘Behold, I knew them.’
World English Bible