99 Here καί (kai) has been translated as “but” to indicate the contrast.
100 Grk “they”; the referent (the twelve, v. 31) has been specified in the context for clarity.
101 Grk “And this.” Here καί (kai) has not been translated.
102 This failure of the Twelve to grasp what Jesus meant probably does not mean that they did not understand linguistically what Jesus said, but that they could not comprehend how this could happen to him, if he was really God’s agent. The saying being hidden probably refers to God’s sovereign timing.
103 Grk “the things having been said.” The active agent, Jesus, has been specified for clarity, and “said” has been translated as “meant” to indicate that comprehension of the significance is really in view here.

In other versions

But they understood none of these things. This saying was hidden from them, and they did not grasp what was said.

The disciples did not understand any of this. Its meaning was hidden from them, and they did not know what he was talking about.

They understood none of these things. The meaning of the saying was hidden from them, and they did not grasp what was said.

But they didn’t understand any of this. The significance of his words was hidden from them, and they failed to grasp what he was talking about.

And they understood none of these things, and this saying was concealed from them, and they did not comprehend the things that were said.

And they understood none of these things: and this saying was hid from them, neither knew they the things which were spoken.

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