What does 2 Samuel 17:21 mean?

And it came to pass, after they were departed, that they came up out of the well, and went and told king David; and they said unto David, Arise ye, and pass quickly over the water; for thus hath Ahithophel counselled against you.

And it came to pass, after they were departed, that they came up out of the well, and went and told king David, and said unto David, Arise, and pass quickly over the water: for thus hath Ahithophel counselled against you.

And it came to pass, after they were departed, that they came up out of the well, and went and told king David; and they said unto David, Arise ye, and pass quickly over the water; for thus hath Ahithophel counselled against you.

Then after the servants had gone away, they came up out of the water-hole and went to give King David the news; and they said, Get up and go quickly over the water, for such and such are Ahithophel's designs against you.

And it cometh to pass, after their going on, that they come up out of the well, and go and declare to king David, and say unto David, `Rise ye, and pass over hastily the waters, for thus hath Ahithophel counselled against you.'

And when they were gone, they came up out of the well, and going on told king David, and said: Arise, and pass quickly over the river: for this manner of counsel has Achitophel given against you.

And it came to pass after they had departed, that they came up out of the well, and went and told king David; and they said to David, Arise and pass quickly over the water; for thus has Ahithophel counselled against you.