Certain parts of the ram, together with certain grain offerings, must be placed in Aaron’s hands and in the hands of his sons. All this must be waved before the LORD. Then it must be offered to God as a burnt offering on the altar. In particular, the breast of the ram is mentioned as a “wave offering” and the thigh as a “heave offering”.
With these acts the ordination continues. First something has happened for them: sacrifices were slaughtered for them. Then something happened with them: they were sanctified with blood and anointed with oil. Now something has to happen by them: they have to bring the wave offering and the heave offering.
As priests, we may know the work that Christ has accomplished for us. We must know that we are sanctified by His blood to be a priest. We may perform our priestly service in the power of the Holy Spirit. We then gain insight into the qualities that have come to light in the Lord Jesus about the work He has accomplished.
The first thing mentioned is fat. Fat speaks of the energy, the perseverance He has shown in the way He has gone. With the fat also bread and cakes are brought. This is a grain offering and speaks of His whole way on earth until the death on the cross. In everything He has been perfectly pure and devoted to God. All this we may wave back and forth and heave up and down in admiration before God’s face.
When everything is waved back and forth, it is put on the burnt offering and sacrificed to God. This means that we worship God for all we have seen of the Lord Jesus. We will tell Him what a joy and satisfaction He must have found in His Son and all that He has done, all of which has been to His Father’s honor alone.
We may admire His love, of which the breast speaks because the heart is there, which has driven Him to do this work. We may see the power, of which the thigh speaks, through which He has completed this work. The breast and the thigh are for Aaron and his sons. As priests, we are allowed to ponder particularly over the love and power of the Lord Jesus. The more we see of this, the more it will be reflected in our devotion as priests.