Strong’s Greek
G3509 — nephos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
νέφος
nephos — pronounced nef'-os
apparently a primary word; a cloud:--cloud.
1 occurrence in the KJV.
Hebrews 12:1
Wherefore seeing we also are compassed about with so great a cloud of witnesses, let us lay aside every weight, and the sin which doth so easily beset us, and let us run with patience the race that is set before us,