4 If he were on earth, he would not be a priest, for there are already priests who offer the gifts prescribed by the law. 5 They serve at a sanctuary that is a copy and shadow of what is in heaven. This is why Moses was warned when he was about to build the tabernacle: "See to it that you make everything according to the pattern shown you on the mountain."[1]
4 For if he were on earth, he should not be a priest, seeing that there are priests that offer gifts according to the law: 5 Who serve unto the example and shadow of heavenly things, as Moses was admonished of God when he was about to make the tabernacle: for, See, saith he, that thou make all things according to the pattern shewed to thee in the mount.
4 Now if he were on earth, he would not be a priest at all, since there are priests who offer gifts according to the law. 5 They serve a copy and shadow of the heavenly things. For when Moses was about to erect the tent, he was instructed by God, saying, "See that you make everything according to the pattern that was shown you on the mountain."
4 If he were limited to earth, he wouldn't even be a priest. We wouldn't need him since there are plenty of priests who offer the gifts designated in the law. 5 These priests provide only a hint of what goes on in the true sanctuary of heaven, which Moses caught a glimpse of as he was about to set up the tent-shrine. It was then that God said, "Be careful to do it exactly as you saw it on the Mountain."
4 For if He were on earth, He would not be a priest, since there are priests who offer the gifts according to the law; 5 who serve the copy and shadow of the heavenly things, as Moses was divinely instructed when he was about to make the tabernacle. For He said, "See that you make all things according to the pattern shown you on the mountain."
4 If he were here on earth, he would not even be a priest, since there already are priests who offer the gifts required by the law. 5 They serve in a system of worship that is only a copy, a shadow of the real one in heaven. For when Moses was getting ready to build the Tabernacle, God gave him this warning: "Be sure that you make everything according to the pattern I have shown you here on the mountain."
Matthew Henry's Commentary on Hebrews 8:4-5
Commentary on Hebrews 8:1-6
(Read Hebrews 8:1-6)
The substance, or summary, of what had been declared was, that Christians had such a High Priest as they needed. He took upon himself human nature, appeared on earth, and there gave himself as a sacrifice to God for the sins of his people. We must not dare to approach God, or to present any thing to him, but in and through Christ, depending upon his merits and mediation; for we are accepted only in the Beloved. In all obedience and worship, we should keep close to God's word, which is the only and perfect standard. Christ is the substance and end of the law of righteousness. But the covenant here referred to, was that made with Israel as a nation, securing temporal benefits to them. The promises of all spiritual blessings, and of eternal life, revealed in the gospel, and made sure through Christ, are of infinitely greater value. Let us bless God that we have a High Priest that suits our helpless condition.