Form: It's a form of hymn metre, with alternating longer and shorter lines. The first, fifth and seventh line of each stanza is compose of two iambs and an amphibrach (taDUM taDUM taDUMta, or i-AMB i-AMB am-PHI-brach). The third line of each stanza is in iambic tetrameter (four iambs per line - taDUM taDUM taDUM taDUM). The even-numbered lines are all in iambic trimeter (taDUM taDUM taDUM).