Revelation seven teaches that during a time of judgment called the “Great Tribulation,” many people, starting with the Jews and spreading throughout the world, will see God and believe in Him.
If God is God, He has the right to judge the world. But even as He punishes He invites people to turn to Him. Jesus stepped in as our substitute and took on God’s punishment for sin at the cross. But God will never force someone to believe in Him. It has to be their choice.
One day all people who believe in God will stand together around His throne!