John Gill Commentary Luke 9:44

"Let these words sink into your ears: for the Son of man shall be delivered up into the hands of men." — Luke 9:44 (ASV)

Let these sayings sink down into your ears
The Vulgate Latin, Arabic, and Ethiopic versions read, "in your hearts": Christ's sense is, that they would, diligently attend to them, seriously consider them, and carefully lay them up in their memories; and what he refers to are not the words he had spoken, but what he was about to say; namely, as follow:

for the son of man shall be delivered into the hands of men ;
by whom he should be killed, though he should rise again the third day; (See Gill on Matthew 17:22) (See Gill on Matthew 17:23)