Strong’s Greek
G1183 — dekatoo
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
δεκατόω
dekatoo — pronounced dek-at-o'-o
from 1181; to tithe, i.e. to give or take a tenth:--pay (receive) tithes. see GREEK for 1181
2 occurrences in the KJV.
Hebrews 7:6
But he whose descent is not counted from them received tithes of Abraham, and blessed him that had the promises.
Hebrews 7:9
And as I may so say, Levi also, who receiveth tithes, payed tithes in Abraham.