Isaiah 19:19-21 Amplified Bible, Classic Edition (AMPC)
19 In that day there will be an altar to the Lord in the midst of the land of Egypt, and a pillar to the Lord at its border.
20 And it will be a sign and a witness to the Lord of hosts in the land of Egypt; for they will cry to the Lord because of oppressors, and He will send them a savior, even a mighty one, and he will deliver them.
21 And the Lord will make Himself known to Egypt, and the Egyptians will know (have knowledge of, be acquainted with, give heed to, and cherish) the Lord in that day and will worship with sacrifices of animal and vegetable offerings; they will vow a vow to the Lord and perform it.
Isaiah 19:19-21 New International Version (NIV)
19 In that day there will be an altar to the Lord in the heart of Egypt, and a monument to the Lord at its border. 20 It will be a sign and witness to the Lord Almighty in the land of Egypt. When they cry out to the Lord because of their oppressors, he will send them a savior and defender, and he will rescue them. 21 So the Lord will make himself known to the Egyptians, and in that day they will acknowledge the Lord. They will worship with sacrifices and grain offerings; they will make vows to the Lord and keep them.