I was trying to give you an example of the usage of the word "til"
Yes, but you didn't give one that parallels the verse from Matthew.
In your example, saying we won 4 SBs in the 70s, but didn't win another till 2006. This would lead me to conclude that the Steelers won the Super Bowl held in 2006.
Now, if you said "The Steelers won 4 SBs in the 70s, but didn't win another till 1997" that would be a parallel.
It's true that the Steelers won a Super Bowl after 1997, but who would say the sentence like that?
SD