4 Obsidian
2 Diamonds
1 Book
Open a crafting table
Place 1 Book in the top-middle slot
Place 1 Diamond in the middle-left slot
Place 1 Obsidian in the middle-center slot
Place 1 Obsidian in the middle-right slot
Place 1 Diamond in the bottom-middle slot
Place 1 Obsidian in the bottom-left slot
Place 1 Obsidian in the bottom-right slot
Take the Enchanting Table from the result slot