'Strength' in the Bible

And he answered and said to me, "This [is] the word of Yahweh to Zerubbabel, saying, 'Not by strength and not by power, but [only] by my Spirit,' says Yahweh of hosts.

And the clans of Judah will say {to themselves}, "The inhabitants of Jerusalem are a strength to us, through Yahweh of hosts, their God."