a nail in # 15_EZR_09_08 # And now for a little space grace hath been [showed] from the LORD our God, to leave us a remnant to escape, and to give us a nail in his holy place, that our God may lighten our eyes, and give us a little reviving in our bondage. 
a nail in # 23_ISA_22_23 # And I will fasten him [as] a nail in a sure place; and he shall be for a glorious throne to his father's house.