What gospel has three endings and what are the differences between the endings?

This is called the Synoptic problem ( like coming into synch- visually- syncho-optic). It has baffled theolgians since early times. the three = actually four gospels have slightly different Wordings and literary styles. it is not known, for example if the Gospel writers knew Jesus as a child. The bigger credibility gap is that they jump from the advent to Christmas- wise men- then Bang he is twelve years old and missing in the Temple ( this was satirized in a car magazine by showing the Savior as as Young Man in a Garage with the caption- In My Father"s Garage, there are many stalls!) Then- Bang! he is an adult young man in apparently his middle twenties. The three or four gospels are out of synch in a number of areas. Luke seems a bit soi-disant ( remote) if you read the opening paragraphs of his Christmas account- it almost sounds more like a child"s misunderstanding of Election day- people moving in and out of buildings in a sort of controlled chaos- the world taxation angle- then it jumps to the Christmas narrative- I always thought it sounded , or started out, more like Election Day! Kidding aside, there is the possibility that the Gospels were written posthumously ( after Christ"s death_ and there would be the same necessary gaps, as one would have in a newspaper obituary The Gap problem is far more serious than the synoptic problem. Look up synoptic problem in theology. In my Father"s garage, hey it is funny.