Responsible for the reign of terror unleashed upon area settlers, Delaware Indian war chief Teedyuscung assuredly must have had his reasons for picking up the hatchet.  No one goes to war, especially against a Covenant Chain ally of one's own feudal lord, without truly substantial justification.

Wars don't "just happen".  In almost all cases, a significant triggering episode is required... what historians refer to as a "proximate cause", an event so earthshaking that a populace can naught but act.

So what major event triggered Teedyuscung to go to war?

Let's look at the timeline.  His very first attack was directed at the Moravian missionary site at Gnadenhuetten that fell by massacre on 24 November 1755.  Had anything significant transpired in the preceding days?  Indeed it had -- just six days earlier, New England's most powerful earthquake ever had resonated from Nova Scotia all the way down to the Carolinas.  This was the big one.  A "Hand of God" moment (estimated at 6.2 on the Richter scale), that rocked the colonial landscape.

We know what the colonists thought about this event, as there are hundreds of references to this quake in the colonial literature, but what did the Delaware Indians think about this quake?

In their religious tradition, earthquakes were regarded as the Voice of the Great Spirit, a deity seething with anger at the spiritual condition of his people.  So exactly what was the spiritual condition of the Delaware Indians at the moment that this earthquake struck?

At that exact moment in time, the tribe was contending with a pernicious spiritual threat at their very doorstep -- the spiritual threat posed by the aggressive Christianizing activities of the local Moravian missionaries that had already converted more than half of their tribe.  This was a community in a major state of spiritual flux.

...and then their God speaks to them, not once, but twice -- an aftershock was recorded on 23 November, 1755 -- and the tribe resolves to placate the anger of their Great Spirit by immediately eradicating the threat in their midst.

One day later, the attacks began.  First at Gnadenhuetten, second at Hoeth's plantation (a Moravian missionary circuit site), third at Brodhead's Moravian mission site.  The first three attacks of the war, all directed against Moravian missionary targets.

Teedyuscung was on a holy mission.  The war in Northampton county would be characterized by sacred violence.