'Diligently' in the Bible

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.

In everything I showed you [by example] that by working hard in this way you must help the weak and remember the words of the Lord Jesus, that He Himself said, ‘It is more blessed [and brings greater joy] to give than to receive.’”