What is God's Kingdom?

https://www.jw.org/en/library/magazines/watchtower-no2-2020-may-jun/

Many people pray for God’s Kingdom to come, but have you ever wondered what God’s Kingdom is and what it will do?
CONSIDER WHAT THE BIBLE SAYS:

• What is God’s Kingdom?
  It is a heavenly government ruled by Jesus Christ as King.—Isaiah 9:6, 7; Matthew 5:3; Luke 1:31-33.
• What will God’s Kingdom accomplish?
  It will put an end to all bad things and bring lasting peace to people on earth.—Daniel 2:44; Matthew 6:10.
• What does it mean to seek first the Kingdom?
  It means to support God’s Kingdom and to trust that only it will make conditions on earth the way God wants them to be.—Matthew 6:33; 13:44.

https://www.jw.org/en/library/books/good-news-from-god/what-is-gods-kingdom/video-kingdom-come/