6:6-11 Many excuse themselves from the work of religion, though they may make a show, and profess it. They may impose upon others, yet they deceive themselves if they think to impose upon God, who knows their hearts as well as actions; and as he cannot be deceived, so he will not be mocked. Our present time is seed time; in the other world we shall reap as we sow now. As there are two sorts of sowing, one to the flesh, and the other to the Spirit, so will the reckoning be hereafter. Those who live a carnal, sensual life, must expect no other fruit from such a course than misery and ruin. But those who, under the guidance and influences of the Holy Spirit, live a life of faith in Christ, and abound in Christian graces, shall of the Spirit reap life everlasting. We are all very apt to tire in duty, particularly in doing good. This we should carefully watch and guard against. Only to perseverance in well-doing is the reward promised. Here is an exhortation to all to do good in their places. We should take care to do good in our life-time, and make this the business of our lives. Especially when fresh occasions offer, and as far as our power reaches.

9. (2Th 3:13). And when we do good, let us also persevere in it without fainting.

in due season—in its own proper season, God's own time (1Ti 6:15).

faint not—literally, "be relaxed." Stronger than "be not weary." Weary of well-doing refers to the will; "faint not" to relaxation of the powers [Bengel]. No one should faint, as in an earthly harvest sometimes happens.