“He became obedient unto death …” Philippians2:8 KJV
“He humbled Himself by becoming obedient to the point of death, even death on a cross.” Philippians 2:8 NASB
“He learned obedience by the things which He suffered” Hebrews 5:8 KJV
“He learned obedience from the things which He suffered.” Hebrews 5:8 NASB
“By the obedience of One shall many be made righteous.” Romans 5:19 KJV
“Through the obedience of the One the many will be made righteous. Romans 5:19 NASB
God delights in obedience. It was disobedience which brought sin into the world, leading to the corruption of creation and the blight on human nature. Issuing from the Garden of Eden has been a long line of humanity marked by disobedience. Only the grace of God has interrupted that history and transformed lives, creating hearts bowing to the will of God.
But there was one life lived here that commenced with obedience and terminated in the greatest act of obedience ever displayed. Think first of all of the –
The Extent of His Obedience
In his lofty hymn of Christological truth, Paul climaxes with the grand crescendo of, “obedient unto death, even the cross death” (Phil 2:8). As is often pointed out, there is no suggestion here that Christ became obedient to the power of death. It is the Spirit’s way of expressing that His was one, long, uninterrupted life of obedience, even when faced with the tremendous cost of a cross.
The extremity of this would be even more acute to the audience to whom Paul was writing. They were Roman citizens by virtue of the colony-status which Philippi enjoyed. Crucifixion was not permitted as a form of punishment for Romans unless the Emperor so decreed. Their Savior, and ours, endured a death foreign to all Romans. His obedience went to that extent.
The Experience of Obedience
The writer to the Hebrews, in seeking to encourage them in light of their persecution and afflictions, pointed them to a Savior Who knew by experience the price of obedience to His God. He never needed to learn to obey, but He did need to learn by experience, the cost of obeying. As the Throne-Sitter in the heavens (Isa 6:1 and John 12:41) He had not experienced the rejection by His own family, the spittle of men on His face, the lash on His back or the nails in His hands. Having experienced these indignities, having learned how costly obedience can be, He is now able to be a Savior to those who obey Him.
The Expression of His Obedience 
The theology of Romans 5:12-19 is vital to understand but not clear to casual reading. Paul is contrasting the act of disobedience by Adam and its consequences with the one act of obedience of the Lord Jesus and its consequences. His sacrifice at Calvary is thus viewed as a righteous act (v 18) and as an act of obedience (v 19). Paul’s choice of terms is intentional to highlight the contrast between Adam and Christ.
Theology aside for the moment, it is thrilling to think of Calvary as a step of obedience on the part of the Lord Jesus. When in Gethsemane He breathed out His prayer, “Not My will but Thine be done,” He was owning no will but the Father’s. He would obey whatever the cost. Adam asserted his will and sin came into our world. He submitted His will and sin was put away (Heb 9:26).
Consider:
Can you develop further the principle of obedience to the will of God by a careful consideration of Hebrews 10? What did the bullocks and rams brought to Jewish altars lack which was present in the sacrifice of Christ?