Strong’s Greek
G2543 — kaitoi
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
καίτοι
kaitoi — pronounced kah'-ee-toy
from 2532 and 5104; and yet, i.e. nevertheless:--although. see GREEK for 2532 see GREEK for 5104
1 occurrence in the KJV.
Hebrews 4:3
For we which have believed do enter into rest, as he said, As I have sworn in my wrath, if they shall enter into my rest: although the works were finished from the foundation of the world.