This is an interesting topic for discussion. I am thinking spiritually here. What does it mean spiritually to be bound in chains and darkness until judgement? Perhaps it means to be a slave to sin? Slave to the carnal mind and unrighteousness? Most of humanity is bound in chains and darkness reserved for judgement like the angels.
2Pe 3:7 But the heavens and the earth which are now preserved by the same word, are reserved for fire until the day of judgment and perdition of ungodly men.
When are we truly free?
Jhn 8:32 Then you will know the truth, and the truth will set you free.
Jhn 8:36 So if the Son sets you free, you will be free indeed.
Act 13:39 Through him everyone who believes is set free from every sin, a justification you were not able to obtain under the law of Moses.
Rom 6:7 because anyone who has died has been set free from sin.
Rom 6:18 You have been set free from sin and have become slaves to righteousness.
Rom 8:2 because through Christ Jesus the law of the Spirit who gives life has set you free from the law of sin and death.