Verses with the word diligently in the New Testament (11 verses):

Matthew 2:7
Then Herod, when he had privily called the wise men, enquired of them diligently what time the star appeared.

Matthew 2:8
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.

Matthew 2:16
Then Herod, when he saw that he was mocked of the wise men, was exceeding wroth, and sent forth, and slew all the children that were in Bethlehem, and in all the coasts thereof, from two years old and under, according to the time which he had diligently enquired of the wise men.

Luke 15:8
Either what woman having ten pieces of silver, if she lose one piece, doth not light a candle, and sweep the house, and seek diligently till she find it?

Acts 18:25
This man was instructed in the way of the Lord; and being fervent in the spirit, he spake and taught diligently the things of the Lord, knowing only the baptism of John.

1 Timothy 5:10
Well reported of for good works; if she have brought up children, if she have lodged strangers, if she have washed the saints' feet, if she have relieved the afflicted, if she have diligently followed every good work.

2 Timothy 1:17
But, when he was in Rome, he sought me out very diligently, and found me.

Titus 3:13
Bring Zenas the lawyer and Apollos on their journey diligently, that nothing be wanting unto them.

Hebrews 11:6
But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.

Hebrews 12:15
Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled;

1 Peter 1:10
Of which salvation the prophets have enquired and searched diligently, who prophesied of the grace that should come unto you: