For those who got here redirected from This( question marked as duplicate (but)

John 6:26,27: Jesus replied, “Truly, truly, I tell you, it is not because you saw these signs that you are looking for Me, but because you ate the loaves and had your fill. 27 Do not work for food that perishes, but for food that endures to eternal life, which the Son of Man will give you. For God the Father has placed His seal of approval on Him.” (Berean Study Bible) The best teachers are not necessarily those who explain everything immediately. Many concepts and ideas have different levels, one way of teaching is to start with the clearest and simplest in the first pass, and wait for questions to explain the details. Another way is to begin with the complicated stuff, and later make it simple. Jesus seemed to use both ways to stimulate deeper curiosity and initiative to understand more or at least think deeply from his listeners. Chapter 6 of John has more interesting parts in this regard:

John 6:35 And Jesus said unto them, I am the bread of life: he that cometh to me shall never hunger; and he that believeth on me shall never thirst. (KJV) ... 6:52-54: The Jews therefore strove among themselves, saying, How can this man give us his flesh to eat? 53 Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you. 54 Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day. ...6:60 Many therefore of his disciples, when they had heard this, said, This is an hard saying; who can hear it? 61When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you? ...6:66 From that time many of his disciples went back, and walked no more with him. 67 Then said Jesus unto the twelve, Will ye also go away? 68 Then Simon Peter answered him, Lord, to whom shall we go? thou hast the words of eternal life. (KJV) Also all the context of the verses in between shines a light on this. The goal seems to distinguish common superficial curiosity and interest from deeper understanding and faith. Like this he could teach the deeper things to those who were ready for that. Remember that Jesus also told:

Mathew 7:6 Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you. (KJV)

For those who got here redirected from This question which is (some how) marked as duplicate of the question here but is really asking another question: Why Jesus did not share the meaning of the parables with all the people?

John 6:26,27: Jesus replied, “Truly, truly, I tell you, it is not because you saw these signs that you are looking for Me, but because you ate the loaves and had your fill. 27 Do not work for food that perishes, but for food that endures to eternal life, which the Son of Man will give you. For God the Father has placed His seal of approval on Him.” (Berean Study Bible)

The best teachers are not necessarily those who explain everything immediately. Many concepts and ideas have different levels, one way of teaching is to start with the clearest and simplest in the first pass, and wait for questions to explain the details. Another way is to begin with the complicated stuff, and later make it simple. Jesus seemed to use both ways to stimulate deeper curiosity and initiative to understand more or at least think deeply from his listeners. Chapter 6 of John has more interesting parts in this regard:

John 6:35 And Jesus said unto them, I am the bread of life: he that cometh to me shall never hunger; and he that believeth on me shall never thirst. ... 6:52-54: The Jews therefore strove among themselves, saying, How can this man give us his flesh to eat? 53 Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you. 54 Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day. ...6:60 Many therefore of his disciples, when they had heard this, said, This is an hard saying; who can hear it? 61When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you? ...6:66 From that time many of his disciples went back, and walked no more with him. 67 Then said Jesus unto the twelve, Will ye also go away? 68 Then Simon Peter answered him, Lord, to whom shall we go? thou hast the words of eternal life. (KJV)

Also all the context of the verses in between shines a light on this. The goal seems to distinguish common superficial curiosity and interest from deeper understanding and faith. Like this he could teach the deeper things to those who were ready for that. Remember that Jesus also told:

Mathew 7:6 Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you. (KJV)