CHILDREN OF GOD!

But for all who did receive and trust in Him, 

He gave them the right to be reborn as children of God;

John 1:12, (Holy Bible, The Voice)

Faith is the only basic requisite for salvation. 

The authority to become the children of God

 has been given to all those who believed in the name JESUS.

Right! For the question, "how many have been given this authority?", 

the answer is, "For all those who believed and accepted Jesus as Christ".

 So, let us believe in the name of the Lord,

 and accept Him and let us become God's children. 

Translation by Frank Annan