'Possible' in the Bible

It is not possible for a good tree to give bad fruit, and a bad tree will not give good fruit.

But Jesus beheld them, and said unto them, With men this is impossible; but with God all things are possible.

For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.

And he went a little further, and fell on his face, and prayed, saying, O my Father, if it be possible, let this cup pass from me: nevertheless not as I will, but as thou wilt.

Does it not seem possible to you that if I make request to my Father he will even now send me an army of angels?