JOT AND TILDE
The discourse of which Mt. 5:18 forms a part was undoubtedly delivered in Aramaic; Thus, the term jota refers to the Hebrew letter “yod.”
In the Hebrew-Aramaic writing of the Lord’s time, the “yod” was the smallest of the letters of the alphabet. “Tilde” represented one of the horn-shaped features that distinguishes some letter from another very similar one.
In a figurative sense, this means that in the Scriptures everything has value, even what may seem most insignificant.