Cosmas Indicopleustes

For the high priest being eternal, of necessity the salvation also and the Tabernacle are eternal, in accordance again with what is written: And they indeed are many priests, because that by death they are hindered from continuing: but he, because he abideth for ever, hath his priesthood unchangeable. Wherefore also, he is able to save to the uttermost them that draw near unto God through him, seeing that he always liveth to make intercession for them. For such a high priest became us, holy, guileless, undefiled, separated from sinners, and made higher than the heavens. The expression higher than the heavens means, according to the idiom of the language, heaven; and, more clearly still, the expressions "unchangeable", and "the abiding for ever", and "always" indicate a state of things that is indissoluble. For if the priest is unchangeable, the Tabernacle also, wherein he exercises his office, must of necessity be unchangeable, that is, exempt from succession.