Jamieson, Fausset and Brown on Matthew 28:14

14. And if this come to the governor's ears--rather, "If this come before the governor"; that is, not in the way of mere report, but for judicial investigation.

we will persuade him, and secure you--The "we" and the "you" are emphatic here--"we shall [take care to] persuade him and keep you from trouble," or "save you harmless." The grammatical form of this clause implies that the thing supposed was expected to happen. The meaning then is, "If this come before the governor--as it likely will--we shall see to it that," &c. The "persuasion" of Pilate meant, doubtless, quieting him by a bribe, which we know otherwise he was by no means above taking (like Felix afterwards, Ac 24:26).