What does John 10:36 mean?
Jesus' response to the men trying to stone Him for blasphemy (John 10:30–31) is complex and easy to misunderstand. In that era, scribes and scholars would spend countless hours deliberating the meaning of the Scriptures. This often involved the same kind of rhetorical tactics used in politics or other forms of debate. Jesus is responding to the charge of blasphemy, from these men, using the same kind of argument they might employ.The Old Testament used the same term for divinely appointed human authorities as is also used for God Himself: elohim/Elohim. This is seen in Psalm 82, as well as portions of Exodus. Jesus is not suggesting that humans are gods in the sense of being divine. Rather, He is showing that when a person is commissioned by God, it's not unprecedented for God's own Word to use the term "gods" in a poetic sense (John 10:34).
Jesus then states that one cannot claim that God's Word is in error (John 10:35). If God uses the term "little-g-'gods'" in reference to humans, then Jesus' statement about being unified with God isn't necessarily blasphemous. To instantly condemn Jesus, that's exactly what these men would have to do: assume that all such statements are automatically sinful. Jesus is effectively challenging them to call a part of Scripture wrong if they want to condemn Him.
The real measure of Jesus' words is His actions. Rather than simply judging Jesus by words these men do not like, they ought to be considering His works, as well. In the case of Jesus, this includes miracles and other signs which clearly point to Him being divinely appointed (John 3:1–2; 10:19–21). If Jesus' actions did not support His words, then these men would be absolutely right to consider Him a blasphemer. But His works do, in fact, prove that what He claims is true (John 10:37–38).