'Summoning' in the Bible

“Make yourself two trumpets of silver, of hammered work you shall make them; and you shall use them for summoning the congregation and for having the camps set out.

For behold, I am beginning to work calamity in this city which is called by My name, and shall you be completely free from punishment? You will not be free from punishment; for I am summoning a sword against all the inhabitants of the earth,” declares the Lord of hosts.’