John Gill Commentary Jeremiah 45:2

"Thus saith Jehovah, the God of Israel, unto thee, O Baruch:" — Jeremiah 45:2 (ASV)

Thus says the Lord, the God of Israel, to you, O Baruch .
] Whom he knew by name, had a great regard for, and honours with this prophecy; and, being an Israelite, both in a literal and spiritual sense, he addresses him as the God of Israel, and as being his covenant God; in whom he should put his trust, and from whom he might expect safety and protection in the worst of times; and to whose sovereign will, in all the dispensations of his providence, he ought to have humbly and patiently submitted.