Jesus told his disciples that he would be delivered to the Gentiles, suffer, die, and rise again on the third day, just as it was written in the Old Testament. But the disciples did not understand any of this. This was before the disciples truly believed in Jesus as the Christ. (Lk 18:31-34)
Lk 18:31 Then he took unto him the twelve, and said unto them, Behold, we go up to Jerusalem, and all things that are written by the prophets concerning the Son of man shall be accomplished. 32 For he shall be delivered unto the Gentiles, and shall be mocked, and spitefully entreated, and spitted on: 33 And they shall scourge him, and put him to death: and the third day he shall rise again. 34 And they understood none of these things: and this saying was hid from them, neither knew they the things which were spoken.
Jesus rebuked those who traded in the temple, saying, “Destroy this temple, and I will raise it up in three days”. This temple pointed to Jesus Himself. But the disciples did not understand this. This was before the disciples truly believed in Jesus as the Christ. (Jn 2:19-22)
When the resurrected Jesus opened the Bible to his disciples and explained that He was the Christ, the disciples understood the Bible. (Lk 24:32, 44-45)
Lk 24:32 And they said one to another, Did not our heart burn within us, while he talked with us by the way, and while he opened to us the scriptures? 44 And he said unto them, These are the words which I spake unto you, while I was yet with you, that all things must be fulfilled, which were written in the law of Moses, and in the prophets, and in the psalms, concerning me. 45 Then opened he their understanding, that they might understand the scriptures,