'Cannot' in the Bible

“You are the light of the world. A city situated on a hill cannot be hidden.

Neither should you swear by your head, because you cannot make a single hair white or black.

“No one can be a slave of two masters, since either he will hate one and love the other, or be devoted to one and despise the other. You cannot be slaves of God and of money.

Again, a second time, He went away and prayed, “My Father, if this cannot pass unless I drink it, Your will be done.”

Or do you think that I cannot call on My Father, and He will provide Me at once with more than 12 legions of angels?

“He saved others, but He cannot save Himself! He is the King of Israel! Let Him come down now from the cross, and we will believe in Him.