New Revised Standard Version
But I said, “I have labored in vain, I have spent my strength for nothing and vanity; yet surely my cause is with the LORD, and my reward with my God.”

Contemporary English Version
I said to myself, "I'm completely worn out; my time has been wasted. But I did it for the LORD God, and he will reward me."

New American Bible
Though I thought I had toiled in vain, for nothing and for naught spent my strength, Yet my right is with the LORD, my recompense 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.

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.

I have laboured

Isaiah 65:2 I have spread forth my hands all the day to an unbelieving people, who walk in a way that is not good after their own thoughts.

Ezekiel 3:19 But if thou give warning to the wicked, and he be not converted from his wickedness, and from his evil way: he indeed shall die in his iniquity, but thou hast delivered thy soul.

Matthew 17:17 And Jesus rebuked him, and the devil went out of him, and the child was cured from that hour.

Matthew 23:37 Jerusalem, Jerusalem, thou that killest the prophets and stonest them that are sent unto thee, how often would I have gathered together thy children, as the hen doth gather her chickens under her wings, and thou wouldst not?

John 1:11 He came unto his own: and his own received him not.

Romans 10:21 But to Israel he saith: All the day long have I spread my hands to a people that believeth not and contradicteth me.

Galatians 4:11 I am afraid of you, lest perhaps I have laboured in vain among you.

spent

Leviticus 26:20 Your labour shall be spent in vain: the ground shall not bring forth her increase: nor the trees yield their fruit.

2 Corinthians 12:15 But I most gladly will spend and be spent myself for your souls: although loving you more, I be loved less.

yet

Isaiah 53:10-12 And the Lord was pleased to bruise him in infirmity: if he shall lay down his life for sin, he shall see a longlived seed, and the will of the Lord shall be prosperous in his hand. . . .

Psalm 22:22-31 I will declare thy name to my brethren: in the midst of the church will I praise thee. . . .

Luke 24:26 Ought not Christ to have suffered these things and so, to enter into his glory?

John 17:4,5 I have glorified thee on the earth; I have finished the work which thou gavest me to do. . . .

2 Corinthians 2:15 For we are the good odour of Christ unto God, in them that are saved and in them that perish.

Philippians 2:9 For which cause, God also hath exalted him and hath given him a name which is above all names:

Hebrews 12:2 Looking on Jesus, the author and finisher of faith, who, having joy set before him, endured the cross, despising the shame, and now sitteth on the right hand of the throne of God.

work.

Isaiah 40:10 Behold the Lord God shall come with strength, and his arm shall rule: Behold his reward is with him and his work is before him.

Isaiah 62:11 Behold the Lord hath made it to be heard in the ends of the earth, tell the daughter of Sion: Behold thy Saviour cometh: behold his reward is with him, and his work before him.