‘For the law having a shadow of the good things to come, not the very image of the things, can never with the same sacrifices year by year, which they offer continually (or ‘in perpetuity'), make perfect those who draw near.'
For the fact is that the old ceremonial Law could not make men perfect so that they could come openly and without restraint before God, because it dealt in shadows, in what were only partial representations of the full reality. The outward purpose of the full Law was to make men perfect before God, but it could only partially achieve it because it was not in itself sufficient. It served its purpose until men were more in a position to receive the full truth, the reality, ‘the very image (full and accurate representation) of the thing'.
And one reason why it could only partially succeed was that it only contained within it a shadow of the good things to come, a partial, clouded representation (as of God at Sinai) but not the full reality. The ‘good things' include such good things as full forgiveness of sins, fullness of spiritual life, understanding of truth in the heart, and the ability to approach God directly and walk with Him. And these were to be introduced through the Coming One, through Jesus, and His perfect life and teaching, and through Who He is as made known to men, and through His equally perfect sacrifice of Himself. The Law could not contain a true image of those things. It simply portrayed shadows, a visible but vague outline of the real thing, which was partial and had no lasting substance and was therefore eventually to pass away as all shadows do when the sun comes to its height.
It did this through an earthly sanctuary, with its sacred furniture, and its continuously active priesthood, with its message of ‘come, but do not come too close', and its ever continuing sacrificial system which endlessly and unceasingly made offerings for sin. All this brought home the holiness and mercy of God. But they were shadows of the truth (although far better than the nations around enjoyed). They could not accomplish the reality. They were like a vague dark shape resulting from a partially revealed light, a promise of what might be, without giving a full, true illumination. Rather than bringing men right into God's presence they kept them at a safe distance from Him, (although this in itself revealed something about Him), while still allowing limited approach on the right terms. They said, ‘thus far and no further'. For they could never achieve the end of perfecting God's people sufficiently for them to come directly under the searching eye of a holy God. They could never perfect them so that they could enjoy a perfect relationship with the Holy One. And this was because they failed to fully remove men's sin or transform men and did not reveal the full true image, the heavenly reality. Thus they could not bring men fully to God. And this was especially true of the sacrifices which were offered continually year by year on the Day of Atonement.
It may be asked, in that case why did God introduce them to these sacrifices and this ritual? While we cannot enter fully into the mystery of God's ways, for not all is known to us, the answer undoubtedly partly lies in their inability to grasp anything more at that time, and in their unfitness to receive it. Truth had to be revealed on the basis of what they could appreciate. And God clearly saw it as best to reveal it under conditions that they could understand because it was in some way related to what they saw around them.
At that stage they had no conception of Heaven, no real conception of the holiness of God, no deep conception of sin. (Many of them, the mixed multitude (Exodus 12:38) had no background at all in the things of Yahweh). It was through these very sacrifices and ritual, and the history that followed, that such conceptions were slowly built up. They were a preparation for what was to come. Indeed we must remember that when something of the greater reality was first revealed to them through the glory of God on the face of Moses, they pleaded for it to be hidden from them. They did not want to come too close to God.
Furthermore we must remember that they also had to be wooed from the worship of those round about them. Had they not had a ritual that was as good as, and even better than, that of others they would have been constantly tempted to stray as they saw what others seemed to have (as they in fact later did because they were unable to trust God). But at the same time as they seemingly shared the experience of those around them, they did so with the knowledge that their God was invisible, that He was not like any earthly parallel, that He was not a part of nature, and that He was God over all while having a personal interest in them. And they were made aware of the awfulness of sin, and that there was a God-provided way back to Him when they did sin. They were made aware of the moral dimension and that it was closely connected with Who and What their God was. It is doubtful whether at that stage and under those conditions they could have taken in any more.
We must consider how even today, when we have the greater truth, men still seek to depend on, and are led astray by, great buildings and a ritual that can blind men to the truth about God. They still seek after material rather than spiritual worship. How much more then in their day. If they had had nothing similar they would have seen the pagan temples, the pagan ceremonials, and in large numbers would have been drawn to them and away from God's Law.
Furthermore the ritual that they were given did lead those whose hearts were right in the right way. Not for them idolatrous representations of gods that were no gods. Not for them gods who could be manipulated and controlled. Not for them gods which could be easily made, and as easily broken. Rather they knew God as One Who could not be too easily approached and manipulated. One Who was in control rather than being controlled by them. Thus it was for their good, and was certainly sufficient, for those whose hearts were right were enabled to find forgiveness (on the basis of what their offerings pointed forward to) and to come to a deeper knowledge of God than they had previously had. As with the Psalmists, there were those who knew God intimately in their hearts and who walked with Him daily. And that was why the prophets had to prophesy of heavenly things in earthly terms. Which is why those who even now cannot see this have invented a future Millennium. But the fuller perfection awaited a future day, the days of the Messiah, and now that age has come nothing further is required but the eternal kingdom in which our present experience comes to full fruition.