AXUM, Ethiopia-“And they shall make an ark of acacia wood; two and a half cubits shall be its length, a cubit and a half its width, and a cubit and a half its height.” So God commanded Moses in the book of Exodus after delivering the Israelites from slavery in Egypt. Along with the Holy Grail, the fabled Ark of the Covenant has become not only an icon of modern culture but the most revered religious relic of all time. And in Ethiopia, people really believe it’s here, resting in the Chapel of the Tablet in this northern town just miles from the troubled border with Eritrea.