William Kelly · 1 Thessalonians 5.

But privilege known and enjoyed by the believer is the very hinge and incentive of responsibility; and so the apostle proceeds to exhort. "So then let us not sleep as do the rest, but let us watch and be sober" (ver. 6). If children of God, it is a deep spring of joy in Christ and of thanksgiving to our Father, but how instant and inalienable the call to walk according to the relationship! So here, if sons of light and of day, sleep — indifference to the will of the Lord — becomes us not, but watchfulness and sobriety, as those who derive their life from Him Who is the one true light, and will bring in the day, as free from excitement as from careless ease. The righteous shall then shine as the sun in the kingdom of their Father.