2 Kings 2:17

And when they urged him till he was ashamed, he said, Send. They sent therefore fifty men; and they sought three days, but found him not.

Cross References

2 Kings 8:11 And he settled his countenance stedfastly, until he was ashamed: and the man of God wept.
2 Samuel 18:22-23 Then said Ahimaaz the son of Zadok yet again to Joab, But howsoever, let me, I pray thee, also run after Cushi. And Joab said, Wherefore wilt thou run, my son, seeing that thou hast no tidings ready? But howsoever, said he, let me run. And he said unto him, Run. Then Ahimaaz ran by the way of the plain, and overran Cushi.
Luke 11:8 I say unto you, Though he will not rise and give him, because he is his friend, yet because of his importunity he will rise and give him as many as he needeth.
Romans 10:2 For I bear them record that they have a zeal of God, but not according to knowledge.
Hebrews 11:5 By faith Enoch was translated that he should not see death; and was not found, because God had translated him: for before his translation he had this testimony, that he pleased God.