'Fulfilling' in the Bible

For those are the days of vengeance and of fulfilling all that is written.

"I am the voice," he replied, "of one crying aloud, 'Make straight the Lord's way in the Desert,' fulfilling the words of the Prophet Isaiah."

The Lord is not slow in fulfilling His promise, in the sense in which some men speak of slowness. But He bears patiently with you, His desire being that no one should perish but that all should come to repentance.