'Search Diligently' in the Bible

"Enquire, I pray thee, of them that have been before thee; and search diligently among thy forefathers.

I remember my music in the night, With my heart I meditate, and my spirit doth search diligently:

And he sent them to Bethlehem, and said, Go and search diligently for the young child; and when ye have found him, bring me word again, that I may come and worship him also.

Concerning which salvation the prophets that prophesied of the grace that should be for you, did inquire, and search diligently,