1 Samuel 21:12

10 And David arose, and fled that day for fear of Saul, and went to Achish the king of Gath.

11 And the servants of Achish said unto him, Is not this David the king of the land? did they not sing one to another of him in dances, saying, Saul hath slain his thousands, and David his ten thousands?

And David laid up these words in his heart, and was sore afraid of Achish the king of Gath.

13 And he changed his behaviour before them, and feigned himself mad in their hands, and scrabbled on the doors of the gate, and let his spittle fall down upon his beard.

14 Then said Achish unto his servants, Lo, ye see the man is mad: wherefore then have ye brought him to me?

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
Now David took these words to heart and was very much afraid of Achish the king of Gath.
KJV
And David laid up these words in his heart, and was sore afraid of Achish the king of Gath.
WEB
David laid up these words in his heart, and was very afraid of Achish the king of Gath.
ASV
And David laid up these words in his heart, and was sore afraid of Achish the king of Gath.
DARBY
And David took to heart these words, and was much afraid of Achish the king of Gath.
BLB
And David set these words in his heart, and he was exceedingly afraid of Achish king of Gath.
ÅB
David la seg disse ord på hjerte og var svært redd Akis, kongen i Gat.
OTB
David tenkte over disse ordene og ble svært redd for Akisj, kongen av Gat.
B1930
David la sig disse ord på hjerte og var svært redd Akis, kongen i Gat.

Study notes (Tyndale)

Original text and word study

Cross references