'Appointed' in the Bible

I have appointed trustworthy witnesses—Uriah the priest and Zechariah son of Jeberechiah.”

And every stroke of the appointed staffthat the Lord brings down on himwill be to the sound of tambourines and lyres;He will fight against him with brandished weapons.

Jerusalem,I have appointed watchmen on your walls;they will never be silent, day or night.There is no rest for you,who remind the Lord.