22 Some argue this should be translated “suddenly.” When vindication comes it will be quick. But the more natural meaning is “soon.” God will not forget his elect and will respond to them. It may be that this verse has a prophetic perspective. In light of the eternity that comes, vindication is soon.
23 Will he find faith on earth? The Son of Man is looking for those who continue to believe in him, despite the wait.

In other versions

I tell you, he will give justice to them speedily. Nevertheless, when the Son of Man comes, will he find faith on earth?”

I tell you, he will see that they get justice, and quickly. However, when the Son of Man comes, will he find faith on the earth?”

I tell you that he will swiftly grant them justice. Nevertheless, when the Son of Man comes, will he find faith on earth?”

I tell you, he will grant justice to them quickly! But when the Son of Man returns, how many will he find on the earth who have faith?”

I tell you that he will see to it that justice is done for them soon! Nevertheless, when the Son of Man comes, then will he find faith on earth?”

I tell you that he will avenge them speedily. Nevertheless when the Son of man cometh, shall he find faith on the earth?

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