27. Only--Whatever happens as to my coming to you, or not, make this your one only care. By supposing this or that future contingency, many persuade themselves they will be such as they ought to be, but it is better always without evasion to perform present duties under present circumstances [BENGEL].
      let your conversation be--(Compare Php 3:20). The Greek implies, "Let your walk as citizens (namely, of the heavenly state; 'the city of the living God,' Heb 12:22, 'the heavenly Jerusalem,' 'fellow citizens of the saints,' Eph 2:19) be," &c.
      I . . . see . . . hear--so Php 1:30. "Hear," in order to include both alternatives, must include the meaning know.
      your affairs--your state.
      in one spirit--the fruit of partaking of the Holy Spirit (Eph 4:3, 4).
      with one mind--rather as Greek, "soul," the sphere of the affections; subordinate to the "Spirit," man's higher and heavenly nature. "There is sometimes natural antipathies among believers; but these are overcome, when there is not only unity of spirit, but also of soul" [BENGEL].
      striving together--with united effort.

JFB.