Luke continued by saying his parents were also astonished at Jesus. However, his mother, Mary, was also a little upset. Luke said that when his parents saw Jesus (καὶ ἰδόντες αὐτὸν), they were also astonished or shocked (ἐξεπλάγησαν). His mother said to Jesus (καὶ εἶπεν πρὸς αὐτὸν ἡ μήτηρ αὐτοῦ) that she wanted to know why he, this young child (Τέκνον), had did this to them or treated them like this (τί ἐποίησας ἡμῖν οὕτως). She and his father had been distressed, pained, or anxious while searching for him (ἰδοὺ ὁ πατήρ σου κἀγὼ ὀδυνώμενοι ζητοῦμέν σε). Why had he not told them what he was going to do? He had caused them a lot of problems over the last few days.
There is something similar to this in Mark, chapter 7:18-19. Jesus seemed a little upset that they still did not understand what he was telling them about defilement (ὁ δὲ εἶπεν Ἀκμὴν καὶ ὑμεῖς ἀσύνετοί ἐστε). He pointed out that they had to understand (ὐ νοεῖτε) that everything entering into the mouth (ὅτι πᾶν τὸ εἰσπορευόμενον εἰς τὸ στόμα) went into the stomach (εἰς τὴν κοιλίαν χωρεῖ). From the stomach, it came out in a bowel movement that ended up in a sewer, latrine, or dung heap (καὶ εἰς ἀφεδρῶνα ἐκβάλλεται). There was a famous saying that it is harder to sell corn after it has been eaten by a pig than before it was eaten. Whatever went into your mouth would end up as defecation.