himself but in order to obtain a righteousness for us.
As the second Adam, Jesus's obedience satisfied the Covenant of Works under which God placed Adam - its penalty sanction and obedience probation - not for himself but in our place for us.
Our obedience to God therefore is not to obtain an acceptable righteousness before God because Christ our Surety already has obtained it for us.
Our obedience therefore is not to satisfy any kind of probationary test of obedience before God because Christ has already passed God's probationary test for us.
Our obedience is not unto or for ourselves in order to satisfy God's Law but offered thankfully unto God and offered to others in love for their benefit, even as Jesus's obedience was not unto himself nor for himself but offered to God in love for us in order to satisfy the requirement of God's holy Law for our benefit.
God's Justification by his free grace through faith in Christ alone removes the necessity of any self-directed or self-enhancing motive of obedience to the purpose of obtaining an acceptance before God for the believer, i.e. to obtain a better or more secure standing before God. Christ alone has completely secured a perfect standing of righteousness before God for us who believe in him. For Christ alone accomplished all of our salvation for us.
Jesus's obedience was not for himself but for others...
Ergo - the disciple not being above the Teacher - our obedience is not offered for the benefit of ourselves in any way but for the benefit of others, offered in thankfulness to God for his free gift of grace in Christ Jesus.