It is from this perspective that Paul urged Titus with a final and essential qualification for church leaders: they “must hold firm to the trustworthy word as taught” (Titus 1:9).

正是从这个角度出发，保罗向提多提出了教会领袖的最后一项基本资格要求：“坚守所教真实的道理”（多 1:9）。

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KJV: Holding fast the faithful (pistos) word （logos）as he hath been taught (didachē), that he may be able by sound （hygiainō）doctrine （didaskalia）both to exhort and to convince the gainsayers.

“坚守所教（didachē）真实的（pistos）道理（logos），就能将纯正的（hygiainō）教训（didaskalia，教义）劝化人。又能把争辩的人驳倒了。”（多1:9）

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But in vain they do worship me, teaching （didaskō） for doctrines（didaskalia）the commandments of men.

太15:9，他们将人的吩咐，当作道理（didaskalia）教导（didaskō）人，所以拜我也是枉然。