Matthew Chapter 22

Mt.22:15 Then the Pharisees went and plotted how they might entangle Him in His talk.

Mt.22:23 The same day the Sadducees, who say there is no resurrection, came to Him and asked Him,

Mt.22:35 Then one of them, a lawyer, asked Him a question, testing Him, and saying,

Mt.22:45 If David then calls Him ‘Lord,’ how is He his Son?”

The Pharisees & the Sadducees asked him three times and tried to "entangle Him in His talk". But Jesus always replied with an excellent answer and he also used the bible- which the Pharisees were very familiar with- to counter the questions. He did not only know the verses, but he did also know, how to interpret these according to its meaning.

So after the Pharisees & Sadducees asked him three times, and Jesus made them unspeakable with his answers, it was Jesus' turn to ask them. Although he only asked them once, they could not answer his question.
That's strange, because the Pharisees were the leaders of the Jewish religion at that time, and how could they not answer this question??
=> The Pharisees did not completly understand the word of God. Their TRADITION (oh I know, that using this word is very dangerous), that the son's position must be under the position of the father, did not allow them, to understand the word of God. They have already made up their own pattern of the bible and according to this pattern they understood the bible.

Sometimes this also happens to us. If e.g. we see the topic of today's bible study, we might think that we already know what this person will say or what bible verses he will use. But we should never do this because if we do so, we won't get further onward in our faith because we do not let anything renew our pattern of the bible. So we should be able to give up our own position (for it might be wrong or incomplete) and renew our attitude/position/pattern,.. towards God and the bible.

Therefore why Jesus says:

Mt.13:52 Then He said to them, “Therefore every scribe instructed concerning the kingdom of heaven is like a householder who brings out of his treasure things new and old.”