Dict: strongs - thousands

Strongs:

H503 @ אלף 'âlaph aw-laf' Denominative from H505; causatively to make a thousandfold: - bring forth thousands.

H7231 @ רבב râbab raw-bab' A primitive root; properly to cast together (compare {H7241}) that {is} {increase} especially in number; also (as denominative from H7233) to multiply by the myriad: - {increase} be many ({-ifold}) be {more} {multiply} ten thousands.