Jesus didn't call the Son God. This is talking about Him being the Son of God. And the text says, 'you say that I am.'
This is not against what you stated above:
If we ALL want to get picky Jesus quoted the psalms "we are all called Gods". But Jesus Himself stated He was Gods Son.
Pslam 82:6 I said, 'You are "gods"; you are all sons of the Most High.
John 10:22-42 NIV
Further Conflict Over Jesus’ Claims
To those that Love Him Jesus shows Himself pure but to the devious He shows Himself shrewd: They can't outfox the Son.
22Then came the Festival of Dedication
b at Jerusalem. It was winter,
23and Jesus was in the temple courts walking in Solomon’s Colonnade.
24The Jews who were there gathered around him, saying, “How long will you keep us in suspense? If you are the Messiah, tell us plainly.”
25Jesus answered, “I did tell you, but you do not believe. The works I do in my Father’s name testify about me,
26but you do not believe because you are not my sheep.
27My sheep listen to my voice; I know them, and they follow me.
28I give them eternal life, and they shall never perish; no one will snatch them out of my hand.
29My Father, who has given them to me, is greater than all
c ; no one can snatch them out of my Father’s hand.
30I and the Father are one.”
31Again his Jewish opponents picked up stones to stone him,
32but Jesus said to them, “I have shown you many good works from the Father. For which of these do you stone me?”
33“We are not stoning you for any good work,” they replied, “but for blasphemy, because you, a mere man,
claim to be God.”
34Jesus answered them,
“Is it not written in your Law, ‘I have said you are “gods” ’d ? 35If he called them ‘gods,’ to whom the word of God came—and Scripture cannot be set aside— 36what about the one whom the Father set apart as his very own and sent into the world? Why then do you accuse me of blasphemy because I said,
‘I am God’s Son’? 37Do not believe me unless I do the works of my Father.
38But if I do them, even though you do not believe me, believe the works, that you may know and understand that the
Father is in me, and I in the Father.”
39Again they tried to seize him, but he escaped their grasp.
40Then Jesus went back across the Jordan to the place where John had been baptizing in the early days. There he stayed,
41and many people came to him. They said, “Though John never performed a sign, all that John said about this man was true.”
42And in that place
many believed in Jesus.