Songwriter Ian Anderson described the song as "a blues for Jesus, about the gory, glory seekers who use his name as an excuse for a lot of unsavoury things. You know, 'Hey Dad, it's not my fault — the missionaries lied.'"[3] Sean Murphy of PopMatters wrote that, "For “Hymn 43” Anderson sets his sights on the US and in quick order sets about decimating the hypocrisy and myth-making of religion and the new religion, entertainment."[4]
Classic Rock History critic Skip Anderson ranked "Hymn 43" as Jethro Tull's 2nd best song, behind only "Thick as a Brick" and ahead of the more popular songs on Aqualung, "Aqualung" and "Locomotive Breath".[6]