The Lord commanded Abraham to leave his country and go to a land that was foreign to him (Hebrews 11:8). Abraham did so, thus putting his faith into action. Abraham "staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God" (Romans 4:20). Many years later, God asked Abraham to offer up his son Isaac on the altar. Again, Abraham obeyed, knowing that the Lord was able to raise Isaac from the dead (Hebrews 11:19). Such acts of obedience were counted to Abraham for righteousness (see Genesis 15:6; Romans 4:3; James 2:23).
Abraham's faith was perfected (made complete, not lacking) when he obeyed God. "Was not Abraham our father justified by works, when he had offered Isaac his son upon the altar? Seest thou how faith wrought with his works, and by works was faith made perfect? ... Ye see then how that by works a man is justified, and not by faith only" (James 2:21-24). Like Abraham, we are called to demonstrate our faith in God by walking in obedience to God. This is how we come under Abraham's blessing (see Galatians 3:7-9), for he and his wife Sarah are the spiritual parents of those who have faith: "Even as Sara obeyed Abraham, calling him lord: whose daughters ye are, as long as ye do well" (I Peter 3:6).
Jesus perfectly demonstrated a life of obedience. "Who in the days of his flesh, when he had offered up prayers and supplications with strong crying and tears unto him that was able to save him from death, and was heard in that he feared; though he were a Son, yet learned he obedience by the things which he suffered; and being made perfect, he became the author of eternal salvation unto all them that obey him" (Hebrews 5:7-9). While Jesus was in human flesh, He cried out to His Heavenly Father Who was able to save Him from death, yet Jesus submitted His will to the will of the Father (Matthew 26:42). Notice that Jesus was "made perfect" through His obedience. That word perfect means complete, fulfilled, and finished. Although our Lord Jesus was sinless, He was perfected by completing His walk of obedience. In doing so, He became the
High Priest and Author of eternal salvation for all those who obey Him (see Hebrews 5:9; I Peter 1:9).