Stewardship is an interesting concept and an important responsibility. It is one of the first commandments and revelations that were given to mankind on earth. God said in that day, to Adam and Eve while they were yet in the garden, to “[b]e fruitful and multiply and fill the earth and subdue it and have dominion over the fish of the sea and over the birds of the heavens and over every living thing that moves on the earth.” (Gen. 1:28)
Oneness does not mean singleness, but rather it implies two or more. The Lord said that “I and my Father are one” (John 10:30). Hence at least two, plural and not singleness of person’s or in this case a single God, but Gods plural who share a oneness, one purpose.