So what about this?
Matthew 12
While he yet talked to the people, behold, his mother and his brethren stood without, desiring to speak with him.Then one said unto him, Behold, thy mother and thy brethren stand without, desiring to speak with thee.But he answered and said unto him that told him, Who is my mother? and who are my brethren?And he stretched forth his hand toward his disciples, and said, Behold my mother and my brethren!For whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother.
Those who belong to Christ are those who do the will of God, so we are to obey God and do his will. Or don't you believe Jesus? They are his words not mine!
So it's not just those who are elect and chosen before they were born, those from your church only, who can live by their own will because Jesus has done all the obeying for them. But it's all those who do the will of God, they are those who are the true church of Christ!
And yes Jesus was obedient to God, but that doesn't mean we don't have to be, Jesus clearly teaches that those who belong to him do the will of God!