They didn’t realize that Joseph could understand what they were saying. He was using someone else to explain their words to him in the Egyptian language.
Joseph turned away from his brothers and began to weep. Then he came back and spoke to them again. He had Simeon taken and tied up right there in front of them.
So we are Christ’s official messengers. It is as if God were making his appeal through us. Here is what Christ wants us to beg you to do. Come back to God!