TS Eliot was a poet/writer with a strong Christian belief and the conviction -- repeated time and again in his poems such as 'The Waste Land' and others, as well as prose essays-- that Western society in his time was heading for sure destruction and that it had become flabby, immoral and wasteful-- a far cry from the medieval times or earlier Christian era; and that the way to rescue this society from itself, its own self-destructive tendencies, was to reinstate it on a Christian basis/foundation. For Eliot Christianity was a 'firm rock'--and this idea is central to this poem as well as the essay mentioned above. In both cases, TS Eliot basically decries and laments the state of society in his time and offers a firm Christian moral society/system as the solution.