Esias 35:3

3 Be strong, ye relaxed hands and palsied knees.

Esias 35:3 In-Context

1 Be glad, thou thirsty desert: let the wilderness exult, and flower as the lily.
2 And the desert places of Jordan shall blossom and rejoice; the glory of Libanus has been given to it, and the honour of Carmel; and my people shall see the glory of the Lord, and the majesty of God.
3 Be strong, ye relaxed hands and palsied knees.
4 Comfort one another, ye fainthearted; be strong, fear not; behold, our God renders judgment, and he will render ; he will come and save us.
5 Then shall the eyes of the blind be opened, and the ears of the deaf shall hear.

The Brenton translation of the Septuagint is in the public domain.