Westminster Seminary California
Notable Quotable: Machen on the Active and Passive Obedience of Christ

During every moment of His life upon earth Christ was engaged in His passive obedience. It was all for Him humiliation, was it not? It was all suffering. It was all part of His payment of the penalty of sin. On the other hand, we cannot say that His death was passive obedience and not active obedience. On the contrary, His death was the crown of His active obedience. It was the crown of that obedience to the law of God by which He merited eternal life for those whom He came to save

Taken from Machen's God Transcendent