Jeremiah went to Gedaliah son of Ahikam at Mizpah and stayed with him among the people

Jeremiah 40:1-16

When the commander of the guard found Jeremiah, he said to him, “The Lord your God decreed this disaster for this place. And now the Lord has brought it about; he has done just as he said he would. All this happened because you people sinned against the Lord and did not obey him. But today I am freeing you from the chains on your wrists. Come with me to Babylon, if you like, and I will look after you; but if you do not want to, then don’t come. Look, the whole country lies before you; go wherever you please.” However, before Jeremiah turned to go,[a] Nebuzaradan added, “Go back to Gedaliah son of Ahikam, the son of Shaphan, whom the king of Babylon has appointed over the towns of Judah, and live with him among the people, or go anywhere else you please.”

Then the commander gave him provisions and a present and let him go. So Jeremiah went to Gedaliah son of Ahikam at Mizpah and stayed with him among the people who were left behind in the land.

Gedaliah son of Ahikam, the son of Shaphan, took an oath to reassure them and their men. “Do not be afraid to serve the Babylonians,” he said. “Settle down in the land and serve the king of Babylon, and it will go well with you. I myself will stay at Mizpah to represent you before the Babylonians who come to us, but you are to harvest the wine, summer fruit and olive oil, and put them in your storage jars, and live in the towns you have taken over.”

Johanan son of Kareah and all the army officers still in the open country came to Gedaliah at Mizpah and said to him, “Don’t you know that Baalis king of the Ammonites has sent Ishmael son of Nethaniah to take your life?” But Gedaliah son of Ahikam did not believe them.

Why?

Jeremiah may choose to go to Babylon, but he chose to stay with his people. For he does not pursue his own prophet but stays with his people, for he loves his people.

Gedaliah did not hear the warning of Ishmael will take his life. He gives comfort land and territory to Israelites,  and it wasn't a peaceful generation mixed with truth and false. So Gedaliah did not care the people will assassinate him.

The king of Babylon thought Jeremiah is their friend so let Jeremiah free when they conquered Jerusalem.

How?

Only the Lord is our shepherd, our strong shield, and our protector. Trust in the Lord is our blessing.