A husband is the supreme demigod for a woman. The Supreme Personality of Godhead, Lord Vasudeva, the husband of the goddess of fortune, is situated in everyone's heart and is worshiped through the various names and forms of the demigods by fruitive workers. Similarly, a husband represents the Lord as the object of worship for a woman.

SB 6.18.33-34, text

Accepting her husband as the representative of the Supreme Person, a wife should worship him with unalloyed devotion by offering him prasada. The husband, being very pleased with his wife, should engage himself in the affairs of his family.

SB 6.19.17, text

A woman should think of her husband as the Supreme Lord. Similarly, a disciple should think of the spiritual master as the Supreme Personality of Godhead, a sudra should think of a brahmana as the Supreme Personality of Godhead, and a servant should think of his master as the Supreme Personality of Godhead. In this way, all of them will automatically become devotees of the Lord. In other words, by thinking this way, all of them will become Krsna conscious.

From Srila Prabhupada's purport to SB 7.11.29