How does Socrates' statement that only God is wise and human wisdom is worthless relate to ethics?

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Answer:

Socrates was one of the most important philosophers that has ever existed. He never wrote works of his own but his friend and pupil, Plato, therefore wrote about Socrate's life and his teachings.

The Apology was one of the most known and important writings on Socrate's speech when he was at his trial. In this writing, Socrates refers to a single God, refusing to honor the other Greek gods while defending his conception of philosophy, which was based on the Delphic oracle's famous pronouncement that "No one is wiser" than he.

After examining that manifest, Socrates came to interpret that the riddle of Delphic is confirming his "human" wisdom, the knowledge that he knows nothing or a little bit and that his wisdom is worthless in ethics. One of Socrates' famous statements was the one saying that: "An unexamined life was not worth living", meaning that us as individuals have to "examine" our values and beliefs to determine if they were the correct ones.

So, the answer is affirmative. Human wisdom is worthless to ethics based on Socrates' principles and God is the wisest being.