'Permission' in the Bible

I know that the king of Egypt won't give you permission to go, no, not by a mighty hand.

At once Jesus gave them permission. The unclean spirits came out and entered into the pigs. The herd of about two thousand rushed down the steep bank into the sea, and they were drowned in the sea.

After these things, Joseph of Arimathaea, being a disciple of Jesus, but secretly for fear of the Jews, asked of Pilate that he might take away Jesus' body. Pilate gave him permission. He came therefore and took away his body.

When he had given him permission, Paul, standing on the stairs, beckoned with his hand to the people. When there was a great silence, he spoke to them in the Hebrew language, saying,

The next day, we touched at Sidon. Julius treated Paul kindly, and gave him permission to go to his friends and refresh himself.