Thou eat'st.= An anacoluthon.
"Bussy D'Ambois and The Revenge of Bussy D'Ambois" by George Chapman
The anacoluthon in line 3, and the missing rhyme before the burden, in line 4, are characteristic of Khayyam.
"The Sufistic Quatrains of Omar Khayyam" by Omar Khayyam
Luke's change of Mark's vs. 23 is explained by the anacoluthon in Mark.
"Sources of the Synoptic Gospels" by Carl S. Patton