'Seed' in the Bible

Did not the Writing say, that out of the seed of David, and from Bethlehem -- the village where David was -- the Christ doth come?'

They answered him, 'Seed of Abraham we are; and to no one have we been servants at any time; how dost thou say -- Ye shall become free?'

'I have known that ye are seed of Abraham, but ye seek to kill me, because my word hath no place in you;