A future Millennial temple (described in Ezekiel 40—48) will contain some elements of the Old Covenant, including animal sacrifices and Levitical priests. In the resurrection of ancient Israel, largely a rebellious, stiff-necked people, the Levites will finally come face-to-face with their iniquity (Ezekiel 44:10-14) and be ashamed of leading the people astray. Christ will commission them to complete what they did not complete before the demise of the temple. David, realizing that God preferred a penitent heart rather than sacrifice, nevertheless had no problem offering a burnt offering and a sin offering, and Paul had no problem offering a sin offering, even though he was under the New Covenant. God's Church to this day keeps rituals, even though the symbol in no way equals the substance they represent. In the Millennium, as we assume our roles as priests and kings, having been called under the New Covenant, we may have residual squeamishness about watching Levitical priests perform animal sacrifices, but we will learn that the Ezekiel vision has a specific niche in God's overall plan for mankind's learning about Christ's sacrifice for all of mankind.