There is a legal saying that possession is nine-tenths of the law. So if you "have once been enlightened and have tasted of the heavenly gift" (Heb 6:4) you have an entitlement. Also, if you "have been made partakers of the Holy Spirit, and have tasted the good word of God and the powers of the age to come" (:5) you demonstrate ownership. These are heavenly, not worldly, characteristics. "Ground that drinks the rain which often falls upon it and brings forth vegetation useful to those for whose sake it is also tilled, receives a blessing from God" (:7). However, if they "then have fallen away, it is impossible to renew them again to repentance" (:6). "They have escaped the defilements of the world by knowledge of the Lord and Savior Jesus Christ" (2Pe 2:20). "It would be better for them not to have known the way of righteousness, than having known it, to turn away from the holy commandment delivered to them" (:21). Therefore, be mature and train yourselves to put the use of your spiritual senses into practice "to discern good and evil" (Heb 5:14).
Tabernacle worship signified that "the way into the holy place [had] not yet been disclosed" (Heb 9:8). It meant that sacrifices were "offered which [could] not make the worshipper perfect in conscience" (:9). But then "through His own blood, [Christ] entered the holy place once for all, having obtained eternal redemption" (:12). He will now "cleanse your conscience from dead works" (:14) to serve God. A new covenant is therefore created "since a death has taken place for the redemption of the transgressions" (:15). "All things are cleansed with blood, and without shedding of blood there is no forgiveness" (:22). "Where a covenant is, there must be the death of the one who makes it" (:16). A covenant is a legal agreement whereby a testator writes a will making a bequest of what belongs to him to the heirs of the inheritance. Consequently "He is a mediator of a new covenant" (:15). "He has obtained a more excellent ministry, by as much as He is also the mediator of a better covenant, which has been enacted on better promises" (8:6) "It is appointed for men to die once and after this comes judgment" (Heb 9:27). "We have been sanctified through the offering of the body of Jesus Christ once for all" (Heb 10:10). "He has perfected for all time those who are sanctified" (:14). "'You are to be perfect, as your heavenly Father is perfect'" (Mt 5:48). "'I am the Lord who sanctifies you'" (Lev 22:32). "You were washed, but you were sanctified, but you were justified in the name of the Lord Jesus Christ" (1Co 6:11). Therefore "we have confidence to enter the holy place by the blood of Jesus" (Heb 10:19). "Let us draw near with a sincere heart in full assurance of faith" (:22). "Let us hold fast the confession of our hope without wavering, for He who promised is faithful" (:23). "We are not of those who shrink back to destruction, but of those who have faith to the preservation of the soul" (:39).