The original Tau was a cross!!!  So, I respectfully disagree with the oral traditions.

 

Eze 9:4  And the LORD said unto him, Go through the midst of the city, through the midst of Jerusalem, and set a mark upon the foreheads of the men that sigh and that cry for all the abominations that be done in the midst thereof.

 

Eze 9:6  Slay utterly old [and] young, both maids, and little children, and women: but come not near any man upon whom [is] the mark; and begin at my sanctuary. Then they began at the ancient men which [were] before the house.

 

Kay