Genesis 1:26 And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth.
Genesis 1:27 So God created man in his own image, in the image of God created he him; male and female created he them.
Genesis 1:28 And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it: and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth.
Man was given dominion over the earth to subdue or in another word to rule over it as taking care of God's creation. This was the beginning of stewardship or servitude when God placed man in the garden of Eden to tend to the care of everything that was within the garden as God gave man everything he needed to sustain life, Genesis 2:15.
A true man of God is known by his integrity as one who takes responsibility for himself and his actions. One who can express his emotions.
Stewardship of man is carried over as servitude or taking care of those entrusted to his care. A man is set as the Spiritual head of the household as he oversees the welfare of his family providing, nurturing and instructing his family in the ways of the Lord.
1 Corinthians 11:3 But I would have you know, that the head of every man is Christ; and the head of the woman is the man; and the head of Christ is God.
1 Peter 3:7 Likewise, ye husbands, dwell with them according to knowledge, giving honour unto the wife, as unto the weaker vessel, and as being heirs together of the grace of life; that your prayers be not hindered.