Parallel
Romans 14:22
Lutherbibel 1912 · Berean Standard Bible
Hast du den Glauben, so habe ihn bei dir selbst vor Gott. Selig ist, der sich selbst kein Gewissen macht in dem, was er annimmt.
Keep your belief about such matters between yourself and God (note: Literally Keep the faith that you have to yourself before God). Blessed is the one who does not condemn himself by what he approves.