Romans 14:23 ASV

²¹  It is good not to eat flesh, nor to drink wine, nor 'to do anything' whereby thy brother stumbleth.

²²  The faith which thou hast, have thou to thyself before God. Happy is he that judgeth not himself in that which he approveth.

²³  But he that doubteth is condemned if he eat, because 'he eateth' not of faith; and whatsoever is not of faith is sin.