עַל
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (Strong)
(Aramaic) corresponding to עַל: about, against, concerning, for, (there-)fore, from, in, X more, of, (there-, up-)on, (in-)to, + why with.
English (Strong)
(Aramaic) corresponding to עַל: about, against, concerning, for, (there-)fore, from, in, X more, of, (there-, up-)on, (in-)to, + why with.