Tradition alluded to in Scripture

Profound Gratitude written by a Nazarene family which reconciled with the Catholic Church wrote a very pointed post about Scripture alluding to the gap that Tradition fills. Among these scriptural moments is the time frame in Acts between the Resurrection and the Ascension. We know from Scripture that He continued to teach, but it doesn't say what was taught. But surely our Lord must have left some way for these teachings to be passed on...? Tradition of course, is the answer.