Mezuzah

This is one of the symbols YHVH gave His people to remind them of who they are and that they are to follow YHVH. This is one of the Commandments YHVH gave that is classified as a Ordinance and it is something that is visual that act as a reminder. If you do not know what the Mezuzah stands for, it is of no use to you and the Commandment does not do its purpose in your life.