Walls of Houses: had Nails or Pegs Fastened Into Them when Built
Source: TTT
Ecclesiastes 12:11
The words of the wise are like goads, and the anthologies of the masters are like firmly embedded nails driven by a single Shepherd.
Isaiah 22:23
I will drive him like a peg into a firm place, and he will be a throne of glory for the house of his father.