Baruch ben Neriah was a man who lived a very long time ago in a place called Israel. He was a helper to a very important man named Jeremiah, who was a prophet.
Baruch helped Jeremiah write down important things that God was telling him, kind of like how you write down important things your teacher says so you can remember them later.
Jeremiah had a lot of hard things to say, and sometimes people didn't like what he said. They even wanted to hurt him! But Baruch was always by his side, helping him even when it was scary.
Baruch was also very smart and good at reading and writing, which was a really important skill back then. He was a faithful friend and helper to Jeremiah, and without him, some very important messages from God might have been lost forever.