Strong’s Greek
G5412 — phortizo
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
φορτίζω
phortizo — pronounced for-tid'-zo
from 5414; to load up (properly, as a vessel or animal), i.e. (figuratively) to overburden with ceremony (or spiritual anxiety):--lade, by heavy laden. see GREEK for 5414
2 occurrences in the KJV.
Matthew 11:28
Come unto me, all ye that labour and are heavy laden, and I will give you rest.
Luke 11:46
And he said, Woe unto you also, ye lawyers! for ye lade men with burdens grievous to be borne, and ye yourselves touch not the burdens with one of your fingers.