The first reading Dn 1:1-6, 8-20 speaks of David as a involuntary member of the Babylonian captivity. It the lengthy reading the wise David argues his way out of eating the food of his captors that would have violated his religion. The discourse certainly speaks of David’s skills in the argument of persuasion, but that’s not really the point. The first reading must be evaluated in the context of the gospel reading. That gospel reading Lk 21:1-4 tells of the poor woman who donates to the temple from her meager purse. She does not donate from her excess, but from money that was essential.
He said, “I tell you truly,
this poor widow put in more than all the rest;
for those others have all made offerings from their surplus wealth,
but she, from her poverty, has offered her whole livelihood.”
What links these two stories? In both I think David and that woman preserve what is essential to their lives. The woman gives to the faith that is fundamental to her existence, and David follows the precepts of his religion that fundamentally define who he is. In both they loved their God with their whole heart and soul, and both did that with every resource available to them, and it mattered not how limited those resources were..