Good News Translation‘s paragraph break here is appropriate since there is a slight shift in the subject matter.

My son, when you are sick do not be negligent: With My son (literally “Child”) the writer addresses the reader as a teacher addresses a student (see 2.1). Do not be negligent is sometimes interpreted to mean “don’t ignore the illness” (so Good News Translation). However, it may refer to being negligent about one’s religious duties (compare 7.10, where in Hebrew the same verb is used of one’s prayers). For this line it would not be too much to say “Student, if you get sick, do not forget your religious duties.”

But pray to the Lord, and he will heal you: Translators will be grateful for this easy line.

Quoted with permission from Bullard, Roger A. and Hatton, Howard A. A Handbook on Sirach. (UBS Helps for Translators). New York: UBS, 2008. For this and other handbooks for translators see here.