the key of the house of David] I will commit unto him the whole charge and government of the Kings house: Chap. 9. 6. so that there shall not be any thing done there in one kind or other without him; nor any control him in what he doth, Gen. 41. 40, 44. Psal. 105. 21, 22. open and none shall shut] A forme of speech borrowed from the office of those, who having the keys of citie or castle committed unto them, the gates thereof cannot be opened or shut without their direction, and by speciall order from them, Job 12:14. Revelation 3:7.