REV 20:3

3 The angel threw him into the deep dark pit. He shut [the door of the pit], locked it, and sealed it [to prevent anyone from opening it]. He did that in order that Satan might no longer deceive [the people of the] nations [MTY], until those 1,000 years are ended. After that [time], Satan must be released {[God/God’s angel] must release Satan} for a short time [in order that he can do what God has planned].