Revelation of Jesus Christ
From the KJV 1611 with Strong's Concordance
H7650
שָׁבַע
shaba'
{shaw-bah'}
A primitive root; properly to be complete, but used only as a denominative from H7651; to seven oneself, that is, swear (as if by repeating a declaration seven times).
NOTE: Used widely throughout the Old Testament (below are the usages from Daniel only).
sware
Daniel 12:7.