They was no place in the bible where holy week was mentioned. While the events remembered during Holy Week Jesus' suffering, death, and resurrection are central to the Christian faith, the specific tradition of observing a special week before Easter developed later in church history rather than being instituted in Scripture.
"Thy word is a lamp unto my feet, and a light unto my path." (Psalm 119:105).
Christians should always know and keep themselves holy even when is not holy week and have it in their mind that Jesus Christ died for their sins. The Bible emphasizes a life of continual devotion, repentance, and gratitude rather than requiring the observance of Holy Week. What matters most is following God's will and honoring Christ in both worship and daily living.