"Night" is a symbol of the time, the period of absence in the peoples of the cognition of the Light of the Truth of God's Will, the lack of guidance of His Laws, Commandments.
"Night" is a symbol of the moral state of the people, which does not realize the need to fulfill God's Commandments and therefore lives in the darkness of captivity by sin, in the constant self-punishment by the consequences of their crimes.
"Night" is a symbol of man's life, which takes place not according to God's laws, but according to his sinful laws, beliefs, traditions, and morals.
"Night" is the spiritually desolate state of mankind, not finding a way out of spiritual ignorance, out of the darkness of all kinds of problems.