Berean Study Bible
As soon as the king heard this, he was deeply distressed and set his mind on delivering Daniel, and he labored until sundown to rescue him.

King James Bible
Then the king, when he heard these words, was sore displeased with himself, and set his heart on Daniel to deliver him: and he laboured till the going down of the sun to deliver him.

American Standard Version
Then the king, when he heard these words, was sore displeased, and set his heart on Daniel to deliver him; and he labored till the going down of the sun to rescue him.

Darby Bible Translation
Then the king, when he heard these words, was sore distressed thereby, and set his heart on Daniel to save him; and he laboured till the going down of the sun to deliver him.

Douay-Rheims Bible
Now when the king had heard these words, he was very much grieved, and in behalf of Daniel he set his heart to deliver him and even till sunset he laboured to save him.

English Revised Version
Then the king, when he heard these words, was sore displeased, and set his heart on Daniel to deliver him: and he laboured till the going down of the sun to rescue him.

Young's Literal Translation
Then the king, when he hath heard the matter, is greatly displeased at himself, and on Daniel he hath set the heart to deliver him, and till the going up of the sun he was arranging to deliver him.