Apology 3

Claim: not only is Socrates devoted to the gods, but his devotion has left him in poverty. This is the argument that Socrates uses against his accusation of being an atheist. Because of this accusation Socrates asked Euthyphro about piety, in order to get the answer of what it was that he revered and why. Socrates says that those accusing him don't have the knowledge to actually accuse him.

Socrates would rather  teach philosophy than to leave with the warning to never preach philosophy or else it would mean his death. He decides he want to still teach philosophy, even after this sentence, so he knows he is going to his death. He shall obey the gods rather than the athenians.

Who is Socrates´ god?
He does not define his gods specifically, but he does talk about the way to be true to the gods. To care about the greatest improvement of the soul we need virtue; virtue is doing what is right, to be faithful to and uphold what one reveres (which for socrates is wisdom and philosophy). So here, he is not defining virtue as a god, but as the way to be true to them.

How can socrates believe in a soul but not believe in the gods?
This is the claim that Socrates uses against Meletus´ accusation. By improving ones soul, one pleases the gods, and one improves ones soul by wisdom.
Socrates believes in cause and effect, even if he does not know what the cause is. He is wise enough to admit this. Therefore proving that he believes in the gods as a cause to all of the effects that happen on earth. He believes in divine and spiritual acts (in other words, improving the soul and searching for wisdom).