Genesis 18:27 Then Abraham answered and said, “Indeed now, I who am but dust and ashes have taken it upon myself to speak to the Lord:
The name of God used in this verse is the Hebrew Adonai being the plural of Adon, Lord, God, Master.
God is the Trinity, not just some spirit who created everything. Each of His names is often used in the plural to cover each of the Trinity.
God, in three parts, blessed trinity.
God, the Son, as sovereign master and king.