Isaiah 30:7; Isaiah 49:4; Isaiah 65:23

Isaiah 30:7

7 For the Egyptians shall help in vain, and to no purpose: therefore have I cried concerning this, Their strength is to sit still.

Isaiah 49:4

4 Then I said, I have laboured in vain, I have spent my strength for nought, and in vain: yet surely my judgment is with the LORD, and my work with my God.

Isaiah 65:23

23 They shall not labour in vain, nor bring forth for trouble; for they are the seed of the blessed of the LORD, and their offspring with them.