'Smallest' in the Bible

Truly I say to you, Till heaven and earth come to an end, not the smallest letter or part of a letter will in any way be taken from the law, till all things are done.

Whoever then goes against the smallest of these laws, teaching men to do the same, will be named least in the kingdom of heaven; but he who keeps the laws, teaching others to keep them, will be named great in the kingdom of heaven.