'Be Strong' in the Bible

“Thus says the Lord of hosts, ‘Let your hands be strong, you who are listening in these days to these words from the mouth of the prophets, those who spoke in the day that the foundation of the house of the Lord of hosts was laid, to the end that the temple might be built.

It will come about that just as you were a curse among the nations, O house of Judah and house of Israel, so I will save you that you may become a blessing. Do not fear; let your hands be strong.’