Contradictions between gospels in sayings and events?

[Longfellow]

What people call “contradictions” between the gospels in sayings and events are only contradictions if you imagine that each saying was said only once and each event happened only once, which seems very unlikely to me.

 

[Longfellow]

Even if the mission of Jesus only lasted one year, it seems absurd to me to imagine that he never said the same things twice in different ways, or that he only spoke outside to a large audience once, in all that time.