But of the times and the seasons, brethren, ye have no need that I write unto you. For yourselves know perfectly that the day of the Lord so cometh as a thief in the night. For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape. But ye, brethren, are not in darkness, that that day should overtake you as a thief. Ye are all the children of light, and the children of the day: we are not of the night, nor of darkness. Therefore let us not sleep, as do others; but let us watch and be sober. For they that sleep sleep in the night; and they that be drunken are drunken in the night. But let us, who are of the day, be sober, putting on the breastplate of faith and love; and for an helmet, the hope of salvation. For God hath not appointed us to wrath, but to obtain salvation by our Lord Jesus Christ.
1 Thessalonians 5:1-9
I want us to focus our attention on the words the helmet of salvation. The road leading to the coming of the Lord will be very dangerously bumpy and deadly for those whose minds are not firmly shielded with the helmet of hope. Without the helmet the mind will slip into slumber and get drunk with worldly anxieties and cares of this life. And that day will caught such person unawares like a thief in the night.