Jesus Christ came to show us what it means to be a child of God, a son of God. He came to do the will of His Father and He came to show us how we should serve the Father if we want eternal life. If we believe in Jesus Christ, follow and obey Him then we become children of God. We are changed into His likeness, we do as Jesus did and we live as He lived.
Many people profess to be Christians, followers of Jesus but there is no family likeness, they do not look like Jesus, they do not live like Jesus, THEY ARE FAKES. They are not children of God. They never repented from their futile lifestyle. If you follow Jesus you turn away from sin and living for yourself and you live IN OBEDIENCE TO HIM and through your relationship, your fellowship with him. You are sanctified, you are changed, you become like Him in everything.
If we have not become like Jesus Christ and if we do not OBEY His words, WE ARE FAKES! Then we do not have salvation, we are not children of God. A tree is known by its fruit. If we do not bear good fruit we are bad trees. If we have not become like Jesus Christ in every respect then we are not children of God.
Have you become like Jesus? Are you doing the will of your heavenly Father? Are you following the example of Jesus Christ and obeying His words as also recorded in the gospels, Matthew, Mark, Luke and John? Or are you also just a fake?
May Jesus Bless you.