Yes, we are children of God. But Jesus is his first Son. I believe we are to respect and honor that, if we are truly children of God. We could only have become children of God through Jesus. He’s the only one who could have given us such right. Remember?
“But some people did accept him. They believed in him. To them he gave the right to become children of God. They did not become his children in the human way. They were not born because of the desire or wish of some man. They were born of God.” (John 1:12-13)