Opening the book of Hebrews is a bit like stepping into Transporter Room on the starship Enterprise. A few verses are all it takes to beam us suddenly down into an alien world filled with angels, sacrificial purification rites and Melchizedek. There’s very little about Hebrews that looks, sounds or feels familiar to 21st-century people, all of which makes dealing with this letter a challenge (and explains why so many of us avoid it).