un-dẽr-taÌ„k´: “To take upon one's self,†“assume responsibility,†and so in Elizabethan English “be surety.†In this sense in the King James Version , “O Lord,... undertake for me†(ערב, ‛aÌ„rabh, the Revised Version (British and American) “be thou my suretyâ€). Perhaps in the same sense in Sirach 29:19, although the idea is scarcely contained in the Greek verb διωÌκω, dioÌ„ÌkoÌ„, “pursue.†In the modern sense in 1 Esdras 1:28; 2 Macc 2:29; 8:10; the King James Version 2:27. See SURE; SURETY.