The carrying out of it was not shadows and types and images in Heaven. The inspired words of the writer of Hebrews shows that it was real, and the foundation of the reconciliation, salvation, and justification doctrine and practicality experienced by those who have completed the transaction that the Father has offered to those whose faith is permanently lodged in the proactive faithfulness of Jesus Messiah; the transaction being that the faithful human releases all his/her sins to Jesus in exchange for His righteousness being imputed to that party of the agreement.
To hide one's head in the sand is to demean in one's mind the import of what The Christ has done for us all, IMHO. To fail to appreciate the pre-Cross imagery and types and shadows on earth, documented in God's Word, and now demystified for the Bible student is to ignore the eternal meaning of the record. To impugn the Christ-follower's research in and telling of these mysterious truths now revealed is not a noble act that glorifies The Father and His Son our Lord.
I doubt that The God views it as a joking matter, Els.
Selah!
Scripture tells us "flesh and blood cannot inherit the kingdom of God, nor does the perishable inherit the imperishable." (I Cor. 15:50). Our glorified bodies, which are like unto Christ's glorified body, will be given to us or eternity at our resurrection. Will it have blood? If it does, it will not be any kind of human blood.