The safety of appearing at the day of judgement, in the righteousness of Christ

And I may evidence that from these two Principles.

The first Principle is, That righteousness which does purchase any part of the good of the covenant, does purchase the whole good of the covenant: by the righteousness of Christ believers stand already possessed of some part of the good of the covenant: and that righteousness that brought them into the possession of that, will in due time bring them into the possession of what remains: for that which purchases any part of the good of the covenant, must needs purchase the whole: the condition upon which all the good of the covenant depends was one, so that the good of the covenant must be wholly purchased or wholly forfeited: it could not be in part purchased, & in part forfeited; the condition of the covenant of works was perfect righteousness, if that were performed, all the good of the covenant was purchased, if that were not performed, all the good of the covenant was forfeited, an imperfect righteousness would not purchase any one good thing mentioned ⟨p. 139⟩in the covenant: one sin was sufficient to break the whole covenant, and expose unto death: one sin would make a course of righteousness for many years utterly ineffectual unto the purchase of any good, and lay the sinner open unto the curse of the Law, Gal. 3.10. Rom. 6.23. whatever was done towards the performance of the condition of the covenant, signified nothing, except the full was performed that God required: so the condition of the covenant of the Mediator was perfect obedience to the law of the Mediator, viz. perfect obedience to the commands of the law, and perfect bearing of the curse: 'tis true that the active and passive obedience of Christ have a distinct respect one of them to the possession of good, the other to the removal of evil; the one is meritorious, the other satisfactory, one procures the blessings promised, the other delivers from the evils threatened: but yet Christ being made under such a covenant, the success of one depended upon the other, and they are jointly together the purchasing cause of our salvation: and one of them would have had no efficacy at all towards our salvation, if not accompanied with the other: