"For it was fitting for Him, for whom are all things and by whom are all things, in bringing many sons to glory, to make the captain of their salvation perfect through sufferings. For He who sanctifies and those who are being sanctified are all of one, for which reason He is not ashamed to call them brethren, saying: “I will declare Your name to My brethren; In the midst of the assembly I will sing praise to You.” -Hebrews 2:10-12 (ESV)
Sanctify: to separate and make holy . There is One who sanctifies. Jesus came to succeed where Adam failed. Man is a double sinner: by nature and by choice. Through the blood of Jesus we can be sanctified which means we don't have to sin anymore. WE DON'T HAVE TO SIN. Jesus was not born of the Adamic nature but He did have a choice to sin. The Devil tempted Him many times but He chose not to sin. Temptation is not a problem if you are bent towards God instead of yourself.
Sanctification involves killing the Adamic nature. When God sanctifies us, He leaves that power within us! He has killed the old man of sin and we are no longer rooted by sin. Sin then has no power unless we give it the option to have power. Do not give sin that option. Jesus didn't. He stayed separated by the Word so He could sanctify Himself and we must do the same. Everyone who is a true born again believer can be sanctified.
The One who sanctifies and those who are sanctified are deemed to have higher fellowship. He calls us not only friends, but brothers (and sisters). What a joy and a glorious freedom to know that we don't have to sin but if we should God's grace is big enough to cover a multitude of them!