Romans 14:2

One man hath faith [believes he has the liberty or right] to eat all things: but he that is weak eateth herbs. [We are familiar with the universal Jewish scruples with regard to swine's flesh and meat offered to idols; but there were some who refined their diet to far greater extremes--to the "mint, anise and cummin" standard. A sect called Therapeutæ had a regimen thus described by Philo: "Wine is not introduced... and the table bears nothing which has blood, but there is placed upon it bread food, and salt for seasoning, to which also hyssop is sometimes added as an extra sauce for those who are delicate in their eating." However, the abstinence here mentioned was most widely practiced by all scattered Jews. Knowing that any meat bought in Gentile markets was open to question and liable to be unclean, they, being unable to purchase clean meat as prepared by Jewish butchers, abstained from all meat and ate only those things (classed as herbs by the apostle) which they could trace from natural growth to use on their tables. (See Dan 1; Tobit 1:10, 11.) Josephus' "Life," Sec. 3, mentions certain priests who fed solely on figs and dates.]