17. therefore--resuming the exhortation which he had begun with, "I
therefore beseech you that ye walk worthy," &c.
(Eph 4:1).
testify in the Lord--in whom (as our element) we do all things
pertaining to the ministry
(1Th 4:1
[ALFORD];
Ro 9:1).
henceforth . . . not--Greek, "no longer"; resumed from
Eph 4:14.
other--Greek, "the rest of the Gentiles."
in the vanity, &c.--as their element: opposed to "in the Lord."
"Vanity of mind" is the waste of the rational powers on worthless
objects, of which idolatry is one of the more glaring instances. The
root of it is departure from the knowledge of the true God
(Eph 4:18, 19;
Ro 1:21;
1Th 4:5).
JFB.
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