1 Samuel 28:2

And David said unto Achish, Therefore, now, shalt thou know what thy servant can do. And Achish said unto David, Therefore, keeper of my head, will I appoint thee, all the days.

1 Samuel 27:10

Then said Achish, Whither have ye made a raid, to-day? And David said - Against the South of Judah, or against the South of the Jerahmeelites, or as far as the South of the Kenites.

2 Samuel 16:16-19

And it came to pass, when Hushai the Archite, the friend of David, came in unto Absolom, that Hushai said unto Absolom: Long live the king! Long live the king!

Romans 12:9

Your love, be without hypocrisy, - loathing that which is wicked, cleaving to that which is good;

Treasury of Scripture Knowledge

Summary

And David said to Achish, Surely thou shalt know what thy servant can do. And Achish said to David, Therefore will I make thee keeper of mine head for ever.

Bible References

Surely

1 Samuel 27:10
Then said Achish, Whither have ye made a raid, to-day? And David said - Against the South of Judah, or against the South of the Jerahmeelites, or as far as the South of the Kenites.
2 Samuel 16:16
And it came to pass, when Hushai the Archite, the friend of David, came in unto Absolom, that Hushai said unto Absolom: Long live the king! Long live the king!
Romans 12:9
Your love, be without hypocrisy, - loathing that which is wicked, cleaving to that which is good;