en_tn_lite_do_not_use/rom/14/05.md

One person values one day above another. Another values every day equally

"One person thinks one day is more important than some of the others, but another person thinks that all days are the same"

Let each person be convinced in his own mind

You can make the full meaning explicit. You can also translate this in an active form. Alternate translation: "Let each person be sure what he is doing is to honor the Lord" (See: rc://en/ta/man/translate/figs-explicit)