A receiver was a person who weighed tribute or payment. The term in Isaiah 33:18 is more accurately understood as a tribute-weigher than as a modern legal receiver.
Definition
A receiver, in older Bible English, could mean a person who weighed tribute or payment. In Isaiah 33:18 the more precise sense is “he that weighed the tribute.”
Biblical Usage
The term occurs in the King James Version of Isaiah 33:18. The Revised Version replaces it with the clearer description of a tribute-weigher.
Historical Background
The underlying Hebrew word means one who weighs or a weigher.
Historical Bible Dictionaries
International Standard Bible Encyclopedia (ISBE)
<p>re-sev'-er: Found in the King James Version (Isa 33:18); but the Revised Version (British and American) substitutes "he that weighed the tribute." The Hebrew is shoqel, which means "one who weighs," "a weigher."</p>