I hear so many people (those who believe and those who don't) say that we are all God's children. That is a lie the devil wants you to believe.
We are not all God's children; but we are all God's creation.
"But as many as received Him, to them He gave the right to become children of God, even to those who believe in His name, who were born, not of blood nor of the will of the flesh, nor the will of man, but of God." (John 1:12-13)Of course, the Him being referred to is Jesus. Right before this, in verse 11, it tells us that He came to His own - the Jewish people - but they refused to believe that Jesus is the long-promised Messiah, and rejected Him.
Those who received Jesus were the Gentiles (non-Jewish people), though there were some Jewish people who did believe this (most didn't). Because of Jesus' own people rejecting Him, God allowed those of out outside their faith to be born into His family - to be adopted, so to speak. By inviting Jesus into your heart, asking Him to be your Saviour, you are spiritually born into God's family. You become one of His children! It's the only way.
Simply being a human being does not automatically make you a child of God, a part of His family. If that was the case, there would have been no reason for Him to send Jesus to be the attonment for our sins. There would have been no reason for Jesus to suffer on the cross, die and be risen from the dead three days later.
If you want to be included in God's family, you MUST ask Jesus into your heart (honestly), ask Him to forgive your sins and to be your Saviour. If you don't, then you aren't one of God's children, and your future is at stake, and in all honesty, you are on your way to Hell.
Are you one of God's children? If not I would love to talk more with you about Jesus, and help you secure your future in Christ and help you to know that you will be saved.