[impimp]

The Eucharist was a scritural practice. It is discussed in scripture. But scripture does not describe the practice in great detail. The details were handed down by the Traditions that the Apostles wanted us to hold on to.

[count-your-change]

But setting up a hierarchy of priests is not Scriptural and in fact counter to Scripture as the only way open for a Christian to serve as a priest/king was to be appointed to serve as such in heaven.

To say the apostles wanted certain traditions followed they said nothing about for decades after Christ's death is an assumption made to bolster the Traditions as somehow binding as Scripture.

You mention the Eucharist. Few details are given but those that are given provide enough detail to memorialize Jesus’ death, the purpose of the meal.

So where did the apostles demand certain hand movements and various pieces of special garb to be worn and just the right phrases to be spoken?