Because he is ignorant of things past, and things to come he cannot know by any messenger.

he knoweth

Ecclesiastes 6:12 What needeth a man to seek things that are above him, whereas he knoweth not what is profitable for him in his life, in all the days of his pilgrimage, and the time that passeth like a shadow? Or who can tell him what shall be after him under the sun?

Ecclesiastes 9:12 Man knoweth not his own end: but as fishes are taken with the hook, and as birds are caught with the snare, so men are taken in the evil time, when it shall suddenly come upon them.

Ecclesiastes 10:14 A fool multiplieth words. A man cannot tell what hath been before him: and what shall be after him, who can tell him?

Proverbs 24:22 For their destruction shall rise suddenly: and who knoweth the ruin of both?

Proverbs 29:1 The man that with a stiff neck despiseth him that reproveth him, shall suddenly be destroyed: and health shall not follow him.

Matthew 24:44,50 Wherefore be you also ready, because at what hour you know not the Son of man will come. . . .

Matthew 25:6-13 And at midnight there was a cry made: Behold the bridegroom cometh. Go ye forth to meet him. . . .

1 Thessalonians 5:1-3 But of the times and moments, brethren, you need not, that we should write to you: . . .

when