Heb 10:10-14 10 By the which will we are sanctified through the offering of the body of Jesus Christ once for all. 11 And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins: 12 But this man, after he had offered one sacrifice for sins for ever, sat down on the right hand of God; 13 From henceforth expecting till his enemies be made his footstool. 14 For by one offering he hath perfected for ever them that are sanctified. True Believers were perfected forever by Christ's Death before they were even born sinners, if Christ died for our sins 1 Cor 15:3. Now many unenlightened minds, calling themselves Believers or Christians do fail to realize that all sinners Christ has died for, hath once and for all, solely by Hos One Offering, which means His Death, they by it hath been once and for all Sanctified Vs 10 and Perfected forever ! Both the words Sanctified in Vs 10 and Perfected in Vs 14 are in the Perfect tense in the greek : http://www.blueletterbible.org/Bible.cfm?b=Heb&c=10&t=KJV#s=t_conc_1143010 Also in Vs 10 the we are is in the present tense, meaning they were permanently in a state of Sanctification ongoing ! This is before they are born and certainly before they believe. They are these things based upon His Offering of Himself, His Sacrifice, also based upon it is the certainty of of their Eternal Glory which is the Capstone of having been Perfected by His Offering, to be ushered into a Permanent state of Perfection and Glory, Eternal Glory 2 Tim 2:10 Therefore I endure all things for the elect's sakes, that they may also obtain the salvation which is in Christ Jesus with eternal glory. 1 Pet 5:10 But the God of all grace, who hath called us unto his eternal glory by Christ Jesus, after that ye have suffered a while, make you perfect, stablish, strengthen, settle you. This Eternal Glory, the Crowning Achievement of Our Perfection, and only God knows what that all entails, is the simple consequence , outcome of having been both Sanctified and Perfected by the Offerong of Christ, meaning His Death. All of God's Elect, even in their times of being solely in the flesh, unregenerate and totally depraved, enemies of God in their minds as stated here Col 1:21 21 And you, that were sometime alienated and enemies in your mind by wicked works, yet now hath he reconciled They are nevertheless washed in the Blood of Christ , Clothed in His Righteousness Imputed, in the sight of God ! In fact, even the Saints who are presently inn Glory, are no more Holy in the sight of God as they are while they are enemies. In God's Sight, they are always and forever free from any charge of sin, though they may drink it like water while joined with that body of death, but yet their iniquities Christ has already borne for them Isa 53:11 11 He shall see of the travail of his soul, and shall be satisfied: by his knowledge shall my righteous servant justify many; for he shall bear their iniquities. And by that, they have been Sanctified and Perfected forever !