Brethren, if any of you do err from the truth, and one convert him;
The blessing of reclaiming an erring sinner by mutual counsel and intercessory prayer (James 5:16).
Do err, х planeethee (G4105)] - 'be led astray.'
The truth - the Gospel.
One, х tis (G5100)] - 'any.' Everyone ought to seek the salvation of everyone (Bengel).