'Strength' in the Bible

Therefore he told me, "These signify the word of the Lord to Zerubbabel: 'Not by strength and not by power, but by my Spirit,' says the Lord who rules over all."

"The Lord who rules over all also says, 'Gather strength, you who are listening to these words today from the mouths of the prophets who were there at the founding of the house of the Lord who rules over all, so that the temple might be built.

Then the leaders of Judah will say to themselves, 'The inhabitants of Jerusalem are a means of strength to us through their God, the Lord who rules over all.'