John Gill Commentary Jeremiah 51:19

"The portion of Jacob is not like these; for he is the former of all things; and [Israel] is the tribe of his inheritance: Jehovah of hosts is his name." — Jeremiah 51:19 (ASV)

The portion of Jacob [is] not like them; for he [is] the
former of all things: and [Israel is] the rod of his inheritance: the
Lord of hosts [is] his name.] (See Gill on Jeremiah 10:16).