'Strengthen' in the Bible

be strong, and we strengthen ourselves, for our people, and for the cities of our God, and Jehovah doth that which is good in His eyes.'

from the battles, even from the spoil they sanctified to strengthen the house of Jehovah;

Both riches and honor come from You, and You rule over all, and in Your hand is power and might; and it lies in Your hand to make great and to strengthen everyone.