'Authorization' in the Bible

I also asked the king, "If it seems good to you, order that letters of authorization be given me for the Trans-Euphrates governors, so they will allow me to pass through to Judah,

The king granted this for me, according to the good hand of my God. So I went to the Trans-Euphrates governors and gave them the king's letters of authorization. The king also sent army officers and cavalry to accompany me.