New Living Translation
I replied, “But my work seems so useless! I have spent my strength for nothing and to no purpose. Yet I leave it all in the LORD’s hand; I will trust God for my reward.”

American Standard Version
But I said, I have labored in vain, I have spent my strength for nought and vanity; yet surely the justice due to me is with Jehovah, and my recompense with my God.

Berean Study Bible
But I said, “I have labored in vain, I have spent My strength in futility and vanity; yet My vindication is with the LORD, and My reward is with My God.”

Douay-Rheims Bible
And I said: I have laboured in vain, I have spent my strength without cause and in vain: therefore my judgment is with the Lord, and my work with my God.

English Revised Version
But I said, I have laboured in vain, I have spent my strength for nought and vanity: yet surely my judgment is with the LORD, and my recompence with my God.

King James Bible
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.

World English Bible
But I said, "I have labored in vain, I have spent my strength for nothing and vanity; yet surely the justice [due] to me is with Yahweh, and my reward with my God."

Young's Literal Translation
And I said, 'For a vain thing I laboured, For emptiness and vanity my power I consumed, But my judgment is with Jehovah, And my wage with my God.

Isaiah 49:4 Additional Translations ...