he discovered

Isaiah 36:1-3
In the fourteenth year of the reign of Hezekiah, Sennacherib king of Assyria attacked and captured all the fortified cities of Judah. . . .

the armour

1 Kings 7:2
He built the House of the Forest of Lebanon a hundred cubits long, fifty cubits wide, and thirty cubits high, with four rows of cedar pillars supporting the cedar beams.

1 Kings 10:17
He also made three hundred small shields of hammered gold; three minas of gold went into each shield. And the king put them in the House of the Forest of Lebanon.

1 Kings 14:27, 28
So King Rehoboam made bronze shields in their place and committed them to the care of the captains of the guard on duty at the entrance to the royal palace. . . .

Song of Solomon 4:4
Your neck is like the tower of David, built with rows of stones; on it hang a thousand shields, all round shields of the warriors.