While I did use Elijah as a focal point for the discussion, I believe that the "weightier matters"
are that Malachi 3 and 4, and many other unfulfilled prophecies made reference to by Peter in
Acts 3:21 suggests that there will be a great "spiritual restoration" in Israel prior to Messiah's
second coming, and such an undertaking is the Lord's work, not man's. It is not centered on a
temple or resumption of a sacrificial system. This requires at the very least, "the spirit and power"
of Elijah, as well as an absolutely perfect understanding of what is revealed by the Torah.
Malachi 4:4 Remember the Law of Moses, My servant,
Which I commanded him in Horeb for all Israel,
With the statutes and judgments.
I proposed in a thread last year that this understanding can begin by acknowledging
the immensity of what is being stated and claimed in this one verse:
Joshua 24:31 Israel served the Lord all the days of Joshua, and all the days of the elders who
outlived Joshua, who had known all the works of the Lord which He had done for Israel.
Please note the comprehensive, all-encompassing nature of this claim, and also that it was attained
not only under Joshua, but also "all the days of the elders who outlived Joshua". Hence, as the testimony of the Torah in Exodus supports, the system being set up by Moses was to be centered around elders who would serve as judges=shaphat, to provide judgments=mishpat for the people.
Not one central figure. By this righteousness and judgment would be served.
Psalms 89:14 Righteousness and judgment are the foundation of Your throne;
Mercy and truth go before Your face.