The translation of this sentence is Lightfoot’s, who prefers with Rufinus and the Syriac to read the optative ζηλώσαι instead of the infinitive ζηλῶσαι, which is found in most of the mss. and is given by Heinichen and the majority of the other editors. The sense seems to require, as Lightfoot asserts, the optative rather than the infinitive.