It will be a sign and a witness to the LORD of Hosts in the land of Egypt. When they cry out to the LORD because of their oppressors, He will send them a savior and defender to rescue them.
Jewish Publication Society of America Version (JPS1917) - Isaiah 19:20 >And it shall be for a sign and for a witness unto the LORD of hosts in the land of Egypt; for they shall cry unto the LORD because of the oppressors, and He will send them a saviour, and a defender, who will deliver them.