'Least' in the Bible

For I say unto you, Among those that are born of women there is not a greater prophet than John the Baptist: but he that is least in the kingdom of God is greater than he.

And said unto them, Whosoever shall receive this child in my name receiveth me: and whosoever shall receive me receiveth him that sent me: for he that is least among you all, the same shall be great.

If ye then be not able to do that thing which is least, why take ye thought for the rest?

He that is faithful in that which is least is faithful also in much: and he that is unjust in the least is unjust also in much.

Saying, If thou hadst known, even thou, at least in this thy day, the things which belong unto thy peace! but now they are hid from thine eyes.