Romans 6:21; Romans 11:23; Romans 14:14-15

21 What fruit had ye then in those things whereof ye are now ashamed ? for the end of those things is death.
23 And they also, if they abide not still in unbelief, shall be graffed in : for God is able to graff them in again.
14 I know , and am persuaded by the Lord Jesus, that there is nothing unclean of itself: but to him that esteemeth any thing to be unclean, to him it is unclean. 15 But if thy brother be grieved with thy meat, now walkest thou not charitably . Destroy not him with thy meat, for whom Christ died .