Genesis 27:2

And he said, Behold now, I am old, I know not the day of my death:
— Genesis 27:2, King James Version

In other translations

World English Bible (WEB)

He said, "See now, I am old. I don't know the day of my death.

American Standard Version (ASV)

And he said, Behold now, I am old, I know not the day of my death.

Young's Literal Translation (YLT)

And he saith, 'Lo, I pray thee, I have become aged, I have not known the day of my death;