"Husband" is one of the characteristics of God, Who in the Word of His Covenants represents true Faith to the Righteous who steadfastly embody His Will as expressed in His Commandments.
"Husband" is a symbol of true Faith in the Will of the One God of Jehovah, which spiritually raises up the man who does it.
The "Husband" is a symbol of Jesus Christ as the "Husband", the Spouse of His "Wife", the "Church", the Assembly of the Righteous.
The "Husband" is also the Righteous Man, a spiritually mature and strong person, who has matured in the knowledge and embodiment of God's Commandments.