'Fixed' in the Bible

I will give to you the keys of the kingdom of heaven: and whatever is fixed by you on earth will be fixed in heaven: and whatever you make free on earth will be made free in heaven.

But whoever is a cause of trouble to one of these little ones who have faith in me, it would be better for him to have a great stone fixed to his neck, and to come to his end in the deep sea.

Truly I say to you, Whatever things are fixed by you on earth will be fixed in heaven: and whatever you make free on earth will be made free in heaven.

What will you give me, if I give him up to you? And the price was fixed at thirty bits of silver.