That I may be delivered (hina rusthō). First aorist passive subjunctive of ruomai, old verb to rescue. This use of hina is the sub-final one after words of beseeching or praying. Paul foresaw trouble all the way to Jerusalem (Act 20:23; Act 21:4, Act 21:13).
May be acceptable to the saints (euprosdektos tois hagiois genētai). “May become (second aorist middle subjunctive of ginomai) acceptable to the saints.” The Judaizers would give him trouble. There was peril of a schism in Christianity.