Verses with the word weakened in the Old Testament (3 verses):

Ezra 4:4
Then the people of the land weakened the hands of the people of Judah, and troubled them in building,

Nehemiah 6:9
For they all made us afraid, saying, Their hands shall be weakened from the work, that it be not done. Now therefore, O God, strengthen my hands.

Psalms 102:23
He weakened my strength in the way; he shortened my days.