SabbathBlessings, I will explain it more for you.
Joseph thought his brothers would understand the wisdom of God, how God would deliver and preserve the Hebrews through Joseph being betrayed into the hands of Egypt bu his brothers including Judah, ( the same as Jesus was betrayed but this is for the light and cleansing of the Gentiles ( this proves and shows the way of the faith of God)..
Genesis 45:5 Now therefore be not grieved, nor angry with yourselves, that ye sold me hither: for God did send me before you to preserve life.
Acts 7:25 For he supposed his brethren would have understood how that God by his hand would deliver them: but they understood not.
Acts 3:13 The God of Abraham, and of Isaac, and of Jacob, the God of our fathers, hath glorified his Son Jesus; whom ye delivered up, and denied him in the presence of Pilate, when he was determined to let him go.
14 But ye denied the Holy One and the Just, and desired a murderer to be granted unto you;
15 And killed the Prince of life, whom God hath raised from the dead; whereof we are witnesses.
16 And his name through faith in his name hath made this man strong, whom ye see and know: yea, the faith which is by him hath given him this perfect soundness in the presence of you all.
17 And now, brethren, I wot that through ignorance ye did it, as did also your rulers.
The disciples even did not understand the wisdom of God, ( no Spirit of wisdom and understanding given until Christ risen and glorified) and what Paul says is hard to be understood according to the wisdom given to him...
John 12:16 These things understood not his disciples at the first: but when Jesus was glorified, then remembered they that these things were written of him, and that they had done these things unto him.
2 Peter 3:15 And account that the longsuffering of our Lord is salvation; even as our beloved brother Paul also according to the wisdom given unto him hath written unto you;
2 Peter 3:16 As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction.
Peter, is chosen then by God to be for correction, and did not understand the things Christ was doing, including to lay His life down so we live ( Jesus had to rebuke Peter to be of satan)
Here in Acts we see Peter is confused how God shows that nothing is unclean when God reveals it is cleansed..
Acts 11:7 And I heard a voice saying unto me, Arise, Peter; slay and eat.
8 But I said, Not so, Lord: for nothing common or unclean hath at any time entered into my mouth.
9 But the voice answered me again from heaven, What God hath cleansed, that call not thou common.
This is why Peter here again, has to ask Jesus what He means, of the parable of what goes into mans mouth not defiling him, and what comes out of him is instead what defiles him???????
It is confounding to the legalistic Jews.
But Jesus again asking and highlighting that Peter is yet without understanding, tells WHATSOEVER GOES INTO THE BELLY, GOES BACK OUT, it cant defile you.
But what is in that heart, is evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies, they defile you, as they remain in you...
Matthew 15:10 And he called the multitude, and said unto them, Hear, and understand:
11 Not that which goeth into the mouth defileth a man; but that which cometh out of the mouth, this defileth a man.
12 Then came his disciples, and said unto him, Knowest thou that the Pharisees were offended, after they heard this saying?
13 But he answered and said, Every plant, which my heavenly Father hath not planted, shall be rooted up.
14 Let them alone: they be blind leaders of the blind. And if the blind lead the blind, both shall fall into the ditch.
15 Then answered Peter and said unto him, Declare unto us this parable.
16 And Jesus said, Are ye also yet without understanding?
17 Do not ye yet understand, that whatsoever entereth in at the mouth goeth into the belly, and is cast out into the draught?
18 But those things which proceed out of the mouth come forth from the heart; and they defile the man.
19 For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:
20 These are the things which defile a man: but to eat with unwashen hands defileth not a man.
Now we are revealed this and persuaded of this..
Romans 14:14 I know, and am persuaded by the Lord Jesus, that there is nothing unclean of itself: but to him that esteemeth any thing to be unclean, to him it is unclean.
Love is not narrowing down the law, love is magnifying it to make it honourable, for the sake of the righteousness of the Lord....
Isaiah 42:21 The Lord is well pleased for his righteousness' sake; he will magnify the law, and make it honourable.