To whom can I speak and give warning?

Jeremiah 6:1-15
The Lord gave sign to Israel, "Flee for safety,people of Banjamin! Flee from Jerusalem! Sound the trumpet in Tokoa! Raise the signal over Beth Hakkerem!" and let them know enemy attack them at night, the fortress will be destroyed.
To whom can I speak and give warning? Who will listen to me? Their ears are closed so they cannot hear. The word of the Lord is offensive to them; they find no pleasure in it.
From the least to the greatest, all are greedy for gain; prophets and priests like all practice deceit.
So they will fall among the fallen; they will be brought down when I punish them.
Why?
All God's warnings have fallen on deaf ears.
Banjamin was Jeremiah own tribe, occupying land just north of Jerusalem. Tokoa, Beth Hakkerem are two hills south of the city.
Noon: There was not usual to attack in the heat of the day.
People are fall among the fallen, everyone is greedy for gain. So all of us are sinners.
Many people are dislike the word of the Lord, it is really offensive to them. All of these situation was happened in history. People always couldn't learn from history.
The Lord still hope his people could be saved, but they don't listen to his word and warning.
I find pleasure in God's word, and like to listen the word of God.
How?
Please get rid of my greedy for gain in my heart, don't let me fall among the fallen. I rather stay in the shield of the Lord, don't like to live in the palace of the wicked one.