Walking in truth
walking in truth. See WLC 144. John says he rejoiced greatly, a rare word in the NT (used only twelve times, see note on 3 Jn. 3). Paul talks about his joy in the same way eight times (see notes on Rom. 16:19; 1 Cor. 16:17; 2 Cor. 7:9, 16; Phil. 1:18; 2:17; 4:10; Col. 1:24). The phrase "walking in truth" is a biblical phrase describing true wisdom, that is, "walking in the ways of the LORD" (see notes on 2 Kgs. 20:3). The point is that knowing the truth always goes with doing the truth. One cannot have one without the other (see notes on 1 Jn. 1:6-7; 2:6, 11). People who have the truth, as John understands "the truth," have Christ and, therefore, belong to God (see note on 1 Jn. 2:4).