New Revised Standard Version
How long must your servant endure? When will you judge those who persecute me?

Contemporary English Version
I am your servant! How long must I suffer? When will you punish those troublemakers?

New American Bible
How long can your servant survive? When will your judgment doom my foes?

Douay-Rheims Bible
How many are the days of thy servant: when wilt thou execute judgment on them that persecute me?

How many are the days of thy servant: when wilt thou execute judgment on them that persecute me?

how

Psalm 39:4,5 I spoke with my tongue: O Lord, make me know my end. And what is the number of my days: that I may know what is wanting to me. . . .

Psalm 89:47,48 Remember what my substance is: for hast thou made all the children of men in vain? . . .

Psalm 90:12 Can number thy wrath? So make thy right hand known: and men learned in heart, in wisdom.

Job 7:6-8 My days have passed more swiftly than the web is cut by the weaver, and are consumed without any hope. . . .

when

Psalm 7:6 Rise up, O Lord, in thy anger: and be thou exalted in the borders of my enemies. And arise, O Lord, my God, in the precept which thou hast commanded:

Revelation 6:10,11 And they cried with a loud voice, saying: How long, O Lord (Holy and True), dost thou not judge and revenge our blood on them that dwell on the earth? . . .