The only way you can be IN CHRIST, is if Christ put you IN HIM.
When you receive Christ, that is when Christ put's you IN HIM.
John 1:12 But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name:
When you receive Christ, that is WHEN, God will's your new birth.
John 1:13 Which were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.
The new birth isn’t YOU receiving Him.
Rather, when you receive Christ, God WILL's your new birth.