en_tn/isa/22/25.md

This continues the imagery from the previous verses. (See: Isaiah 22:23)

declaration of Yahweh of hosts

See how you translated this in Isaiah 14:21.

the peg driven in a firm place...will be cut off

This compares Shebna to a peg. This emphasizes that Shebna thought his authority was secure but God will remove him. (See: rc://en/ta/man/translate/figs-metaphor)