999 B
On the one hand, one person values one day above another, but on the other hand, another values every day The phrases “on the one hand” and “on the other hand” introduce two different ways of thinking about something. AT: "One person thinks one day is more important than all the others, but another person thinks that all days are the same" (See: rc://en/ta/man/translate/figs-idiom)
Let each person be convinced in his own mind
The full meaning can be made explicit. AT: "Let each person be sure what they are doing is to honor the Lord" (See: rc://en/ta/man/translate/figs-explicit)
He who observes the day, observes it for the Lord
AT: "The person who worships on a certain day does it to honor the Lord"
and he who eats, eats for the Lord
AT: "The person who eats every kind of food does it to honor the Lord"
He who does not eat, refrains from eating for the Lord
AT: "The person who does not eat certain kinds of food does it to honor the Lord"