What can God not be a deciever?

Question

in Descartes Meditation III

Answer 1

Descartes considers deception to be a sign of weakness. He reasons that God is not weak, therefore God is not a deceiver. 

This is a erroneous converse of the logic, i.e., one can be weak and yet not be a deceiver.

One could recall that God promised Adam and Eve that if they eat of the Tree of Good and Evil, they would die.

They did not.

He deceived.