GOD'S WORD® Translation
They didn't know what he meant. The meaning was hidden from them so that they didn't understand it. Besides, they were afraid to ask him about what he had said.

American Standard Version
But they understood not this saying, and it was concealed from them, that they should not perceive it; and they were afraid to ask him about this saying.

Berean Study Bible
But they did not understand this statement. It was veiled from them so that they could not comprehend it, and they were afraid to ask Him about it.

Douay-Rheims Bible
But they understood not this word; and it was hid from them, so that they perceived it not. And they were afraid to ask him concerning this word.

English Revised Version
But they understood not this saying, and it was concealed from them, that they should not perceive it: and they were afraid to ask him about this saying.

King James Bible
But they understood not this saying, and it was hid from them, that they perceived it not: and they feared to ask him of that saying.

World English Bible
But they didn't understand this saying. It was concealed from them, that they should not perceive it, and they were afraid to ask him about this saying.

Young's Literal Translation
And they were not knowing this saying, and it was veiled from them, that they might not perceive it, and they were afraid to ask him about this saying.

Luke 9:45 Additional Translations ...