'Expedient' in the Bible

but whoever causes one of these little ones who believe in Me to stumble and sin [by leading him away from My teaching], it would be better for him to have a heavy millstone [as large as one turned by a donkey] hung around his neck and to be drowned in the depth of the sea.

The disciples say unto him, If the case of the man is so with his wife, it is not expedient to marry.