Rom Romans, chapter Epistle to the Romans, chapter 14
One man esteems one day above another: another esteems every day [alike]. Let every man be fully persuaded in his own mind.
He that regards the day, regards [it] unto the Lord - Kurios; and he that regards not the day, to the Lord - Kurios he does not regard [it]. He that eats, eats to the Lord - Kurios, for he gives God-The Father thanks; and he that eats not, to the Lord - Kurios he eats not, and gives God-The Father thanks.1Co 10:31; 1Ti 4:4