'Negotiator' in the Bible

But, as a matter of fact, the ministry which Christ has obtained is all the nobler a ministry, in that He is at the same time the negotiator of a sublimer covenant, based upon sublimer promises.

And because of this He is the negotiator of a new Covenant, in order that, since a life has been given in atonement for the offences committed under the first Covenant, those who have been called may receive the eternal inheritance which has been promised to them.

and to Jesus the negotiator of a new Covenant, and to the sprinkled blood which speaks in more gracious tones than that of Abel.