In the movie The Terminator, John Connor - leader of the human resistance - sent sergeant Kyle Reese "into the word" of 1984. He was sent to save Sarah Connor. That was his mission. He didn't fail. Indeed, he gave his life for her, his friend.
In the story told in John's gospel, Jehovah - the LORD of all - sent his son Jesus "into the world" of the 1st century.
John 3:16 For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. 17 For God did not send His Son into the world to condemn the world, but that the world through Him might be saved.
Jesus' mission - the save the world. Yeah, sure, sergeant Reese only had to save one person, but then again, sergeant Reese isn't the Theanthropos. Reese isn't God. (Although, a case can be made that Reese did save mankind, the whole world, by saving Connor. This makes the situation worse!) So, the number needing salvation balances out by the weight of the one doing the saving. Jesus failed, and he even died for all of them.
So, Reese was "sent into the world" to save and he succeeded. Jesus was "sent into the world" to save, and he failed.
Well, he failed if we assume Arminian soteriology anyway...