Hebrews 10:16

God promiseth his true Israel his entering with them into a new testamental covenant; after the days that the covenant administration at Sinai was expired, then the Lord saith, Jeremiah 31:33, that he will renew minds and hearts by his Spirit, and contorm them to his will, that they shall be living, walking exemplars of his law; of both which see Hebrews 8:10. This work of sanctification of souls is properly inferred here, to prove that such as enjoy it are perfected by Christ, because the promise of holiness is joined with that of perfect righteousness. Formerly it was urged from the text to another purpose, to prove God's will of changing the Aaronical administration of the covenant, because this was better. Here it is urged to prove the perfect effect of the sacrifice of Christ once offered to God, without which these promises of the covenant of justifying and sanctifying sinners had neither been made nor effected.