en_tn/2sa/17/21.md

It came about

"It happened." This phrase marks the next event in the story line. (See: rc://en/ta/man/translate/writing-newevent)

cross quickly over the water

Here "the water" refers to the Jordan River. AT: "cross quickly over the river" (See: rc://en/ta/man/translate/figs-metonymy)

has given such and such advice

The idiom "such and such" is used in the place of information that is already know by the reader. Here it refers to what Ahithophel advised Absalom in 2 Samuel 17:1-3. This information can be stated clearly. AT: "has advised that Absalom send him with an army to attack you now" (See: rc://en/ta/man/translate/figs-idiom and rc://en/ta/man/translate/figs-explicit)