The Peace Offering. There is similarity to the burnt offering except that in the burnt offering it is only a male, whereas in the peace offering it can be either male or female (3:1, 5). In conjunction with 7:11-21, we learn that the peace offering is a voluntary offering, a thanksgiving offering (7:16), and this offering will have alongside it the offering of bread (7:14). That portion that is not burnt, it will be for the priests and it will be eaten; nothing shall be left over (7:15).
The peace offerings indicated right relations with God, expressing good-fellowship, gratitude and obligation (ISBE, E-sword).
Application: The voluntary nature of a sacrifice has meaning to the thoughtful person. That is not to say that the sacrifices commanded would have no significance, only that when one voluntarily gives, there is something in our feeble minds that looks upon one as being greater than the other. The propriety of this can be left for another occasion, but let us move to the greater point: our Lord appealed to us to come to Him (Matthew 11:28-30). The load He would have us carry is light, for He already carried the heaviest burden. Those who go to the Lord, were they commanded? In one respect yes (Acts 17:30), but in another respect, they voluntarily went. For those who are thoughtful, you think it has any meaning?