Leviticus 1

As the children of Israel proved that they were not ready to live the law of God given to Moses, we learn in modern revelation -

"Now this Moses plainly taught to the children of Israel in the wilderness, and sought diligently to sanctify his people that they might behold the face of God;
24 But they hardened their hearts and could not endure his presence; therefore, the Lord in his wrath, for his anger was kindled against them, swore that they should not enter into his rest while in the wilderness, which rest is the fulness of his glory.
25 Therefore, he took Moses out of their midst, and the Holy Priesthood also;
26 And the lesser priesthood continued, which priesthood holdeth the key of the ministering of angels and the preparatory gospel;
27 Which gospel is the gospel of repentance and of baptism, and the remission of sins, and the law of carnal commandments, which the Lord in his wrath caused to continue with the house of Aaron among the children of Israel..."  (Doctrine and Covenants | Section 84:23 - 27)

Thus Paul wrote -

"...we were kept under the law, shut up unto the faith which should afterwards be revealed.
24 Wherefore the law was our schoolmaster to bring us unto Christ, that we might be justified by faith."  (New Testament | Galatians 3:23 - 24)

As I read the instructions given to the Levite priests and sons of Aaron in the first chapters of Leviticus to administer the sacrifices of the "schoolmaster to bring [them] to Christ", it seemed to me that the focus was on the portion of the Doctrine of Christ, that of faith and repentance, looking forward to the great and last sacrifice of Christ.

In these symbolic sacrifices, we see words such as - without blemish, voluntary, blood, body, bread, priest, altar, fire, wash, oil, frankincense, anointing, salt, sin offering, restitution, sanctified, sacrifice, consecration, and atonement.  All of which seemed to point their faith and repentance to the great and last sacrifice and atonement of Jesus Christ. 

Is it any wonder, Paul tried to emphasize that we are saved by grace, not by works or in other words, obedience to the law of Moses.  Obviously, after many years, the Israelites began to believe that obedience to these rules or laws was all that was required.  It was only the "schoolmaster" to prepare for the fullness of the Doctrine of Christ or his gospel.