Hebrews 3:1
Ch. 3 Christ Superior to Moses(Moses was highly venerated.)
Holy brethren .. only here in N.T. "holy" = saint, i.e. separated, set apart.
Partakers .. sharers .. "partners"
Heavenly .. a call from heaven and to heaven, "glorious."
Apostle .. "One sent" with authority. Suggests Revealor, Divine spokesman, Finality of the Christian message.
High Priest .. (ref to our Savior), makes sacrifice, and represents man before God. LXX Numbers 12:7, Moses is described as being faithful over God's house.