'Footstep' in the Bible

do not provoke them, for I will not give you any of their land, even as little as a footstep because I have given Mount Seir to Esau as a possession.

His strength is made feeble for need of food, and destruction is waiting for his falling footstep.

and He gave him no inheritance in it, not even a footstep, and did promise to give it to him for a possession, and to his seed after him -- he having no child.