Revelation 20:2 makes clear, "And he laid hold on the dragon, that old serpent, which is the Devil, and Satan, and bound him a thousand years. And cast him into the bottomless pit, and shut him up, and set a seal upon him, that he should deceive the nations (ethnos) no more, till the thousand years should be fulfilled: and after that he must be loosed a little season.”
This truth relates to the Gentiles as a whole. It is a generality! But individuals can still be deceived by Satan. This is not a contradiction. It is repeated throughout the OT and the NT. It is telling us that the Gentiles are no longer ignorant. A light has shone on them for 2000 years, giving them the opportunity to see and believe.
Before the cross the Gentiles were considered blind, ignorant, in bondage and living in darkness, deceived by the father of lies. Satan had them hoodwinked. He ruled the nations. He had them under his control. After the resurrection, the Gentiles were no longer deceived as the Gospel light shone throughout the nations. The veil of ignorance was lifted. They are now without excuse.
Isaiah 11:10 says, “And in that day there shall be a root of Jesse, which shall stand for an ensign of the people; to it shall the Gentiles seek: and his rest shall be glorious.”
Does that mean all Gentiles will seek Christ? Of course not. It is a general statement like Revelation 20.
Isaiah 42:6-7 says, “I the LORD have called thee in righteousness, and will hold thine hand, and will keep thee, and give thee for a covenant of the people, for a light of the Gentiles; To open the blind eyes, to bring out the prisoners from the prison, and them that sit in darkness out of the prison house.”
Does that mean all Gentiles will be enlightened? Of course not. It is a general statement like Revelation 20.
Habakkuk 2:14 says, “For the earth shall be filled with the knowledge of the glory of the LORD, as the waters cover the sea.”
The Old Testament prophets predicted the enlightenment of the Gentiles before Christ began His earthly ministry!