malachi 2:5 My covenant was with him of life and peace; and I gave them to him for the fear wherewith he feared me, and was afraid before my name. - Free Bible Online

      5-9. He describes the promises, and also the conditions of the covenant; Levi's observance of the conditions and reward (compare Nu 25:11-13, Phinehas' zeal); and on the other hand the violation of the conditions, and consequent punishment of the present priests. "Life" here includes the perpetuity implied in Nu 25:13, "everlasting priesthood." "Peace" is specified both here and there. MAURER thus explains it; the Hebrew is, literally, "My covenant was with him, life and peace (to be given him on My part), and I gave them to him: (and on his part) fear (that is, reverence), and he did fear Me," &c. The former portion of the verse expresses the promise, and Jehovah's fulfilment of it; the latter, the condition, and Levi's steadfastness to it (De 33:8, 9). The Jewish priests self-deceivingly claimed the privileges of the covenant, while neglecting the conditions of it, as if God were bound by it to bless them, while they were free from all the obligation which it imposed to serve Him. The covenant is said to be not merely "of life and peace," but "life and peace"; for the keeping of God's law is its own reward (Ps 19:11).

JFB.