φορτίζω (< φόρτος), [in LXX: Eze.16:33 (שָׁחַד) * ;] to load: with dupl. accusative, Luk.11:46; pass., to be laden: metaph. (EV, heavy laden), Mat.11:28.† (AS)
Thayer:
1) to place a burden upon, to load 2) metaph. to load one with a burden (of rites and unwarranted precepts)
φορτίζω
phortizō
for-tid'-zo
From G5414; to load up (properly as a vessel or animal), that is, (figuratively) to overburden with ceremony (or spiritual anxiety)