"If it had been possible"

1. Gal. 4: 15
     15 Where is then the blessedness ye spake of? for I bear you record, that, if it had been possible, ye would have plucked out your own eyes, and have given them to me.
2. Alma 12: 23
     23 And now behold, I say unto you that if it had been possible for Adam to have ^apartaken of the fruit of the tree of life at that time, there would have been no death, and the word would have been void, making God a liar, for he said: ^bIf thou eat thou shalt surely die.