51 I don't think, friends, that I need to deal with the question of when all this is going to happen. 2 You know as well as I that the day of the Master's coming can't be posted on our calendars. He won't call ahead and make an appointment any more than a burglar would. 3 About the time everybody's walking around complacently, congratulating each other - "We've sure got it made! Now we can take it easy!" - suddenly everything will fall apart. It's going to come as suddenly and inescapably as birth pangs to a pregnant woman. 4 But friends, you're not in the dark, so how could you be taken off guard by any of this? 5 You're sons of Light, daughters of Day. We live under wide open skies and know where we stand.

6 So let's not sleepwalk through life like those others. Let's keep our eyes open and be smart. 7 People sleep at night and get drunk at night. 8 But not us! Since we're creatures of Day, let's act like it. Walk out into the daylight sober, dressed up in faith, love, and the hope of salvation. 9 God didn't set us up for an angry rejection but for salvation by our Master, Jesus Christ. 10 He died for us, a death that triggered life. Whether we're awake with the living or asleep with the dead, we're alive with him!

Matthew Henry's Commentary on 1 Thessalonians 5:1-10

Commentary on 1 Thessalonians 5:1-5

(Read 1 Thessalonians 5:1-5)

It is needless or useless to ask about the particular time of Christ's coming. Christ did not reveal this to the apostles. There are times and seasons for us to work in, and these are our duty and interest to know and observe; but as to the time when we must give up our account, we know it not, nor is it needful that we should. The coming of Christ will be a great surprise to men. Our Lord himself said so. As the hour of death is the same to each person that the judgment will be to mankind in general, so the same remarks answer for both. Christ's coming will be terrible to the ungodly. Their destruction will overtake them while they dream of happiness, and please themselves with vain amusements. There will be no means to escape the terror or the punishment of that day. This day will be a happy day to the righteous. They are not in darkness; they are the children of the light. It is the happy condition of all true Christians. But how many are speaking peace and safety to themselves, over whose heads utter destruction is hovering! Let us endeavour to awaken ourselves and each other, and guard against our spiritual enemies.

Commentary on 1 Thessalonians 5:6-11

(Read 1 Thessalonians 5:6-11)

Most of mankind do not consider the things of another world at all, because they are asleep; or they do not consider them aright, because they sleep and dream. Our moderation as to all earthly things should be known to all men. Shall Christians, who have the light of the blessed gospel shining in their faces, be careless about their souls, and unmindful of another world? We need the spiritual armour, or the three Christian graces, faith, love, and hope. Faith; if we believe that the eye of God is always upon us, that there is another world to prepare for, we shall see reason to watch and be sober. True and fervent love to God, and the things of God, will keep us watchful and sober. If we have hope of salvation, let us take heed of any thing that would shake our trust in the Lord. We have ground on which to build unshaken hope, when we consider, that salvation is by our Lord Jesus Christ, who died for us, to atone for our sins and to ransom our souls. We should join in prayer and praise one with another. We should set a good example one before another, and this is the best means to answer the end of society. Thus we shall learn how to live to Him, with whom we hope to live for ever.