'Hour' in the Bible

Can any of you add an hour to the length of your life by worrying?

the master of that servant will come on a day when he doesn't expect him and at an hour that he doesn't know. Then his master will punish him severely and assign him a place with unfaithful people.

At that hour some Pharisees came and told Jesus, "Leave and get away from here, because Herod wants to kill you!"

Now when the hour came, Jesus took his place at the table, along with his apostles.

While I was with you day after day in the Temple, you didn't lay a hand on me. But this is your hour, when darkness reigns!"

About an hour later, another man emphatically asserted, "This man was certainly with him, because he is a Galilean!"