Hebrews 8:7

First covenant. By this expression the author designates the system in force in OT times since Sinai, of which the Levitical priesthood was an integral part. For the relationship of this system to the covenant made at Sinai see on Eze. 16:60. For the meaning of the word covenant (diatheke) see on Heb. 7:22. This system with its laws came to an end when Jesus became high priest after the order of Melchisedec (see on eh. 7:12,18,19).

Faultless. The implication is that it was faulty. Yet the fault was not with the covenant inherently but with the people who misapplied it (see on Eze. 16:60; Eph. 2:15). The law, in and of itself, made nothing perfect (see on Heb. 7:22), but correctly employed, it would have pointed them to the Saviour and salvation. The prophets’ repeated appeals for the people to accept the provisions of the everlasting covenant met with continued failure.

For the second. That is, the new (see v. 8).