1 Samuel 27:7

And the time that David dwelt in the country of the Philistines was a full year and four months.

Cross References

1 Samuel 29:3 Then said the princes of the Philistines, What do these Hebrews here? And Achish said unto the princes of the Philistines, Is not this David, the servant of Saul the king of Israel, which hath been with me these days, or these years, and I have found no fault in him since he fell unto me unto this day?