Why did God immediately let Joseph know

about King Pharaoh's two dreams ...

When Pharaoh told Joseph about the two dreams he had, Joseph said,

"The two dreams mean the same thing. God has revealed to Pharaoh what he is about to do"

(Genesis 41:25).

When meditating on this passage, I recalled the two dreams Joseph had

when he was 17 years old (37:7-9).  Was it a coincidence?  I don't think so.

Under God's sovereignty, Joseph was made to have these two dreams,

revealing to him what is about to happen.

However, no one (neither Joseph's brothers who heard about his dreams nor his father Jacob)

was there to interpret or explain his dreams (Ref.: v. 15),

until God Himself revealed it to Joseph later on.

So, Joseph later said to his brothers who came from Canaan to Egypt:

"I am Joseph, your brother, whom you sold into Egypt.

Do not be distressed or angry with yourselves because you sold me here,

for it was to save lives that God sent me ahead of you ...

So then, it was not you who sent me here, but God.

 He made me father to Pharaoh, lord of his entire household and ruler of all Egypt" (45:5, 7-8).

When meditating on this passage, I believe that Joseph's dreams (two dreams),

or the dreams of Pharaoh's cupbearer and baker, or Pharaoh's (two) dreams were not coincidences,

but rather, under God's sovereignty, God revealed to Joseph what He was ultimately going to do.

I believe that the dreams of Pharaoh's cupbearer or Pharaoh himself were merely used as tools by God in the process.

They were ultimately given to Joseph by God to fulfill His purpose.

And the essence of those dreams was God's plan to save Joseph's family.

Interestingly, Joseph knew that Pharaoh's two dreams meant one thing

and that they were what God was about to do (41:25),

but he did not know the meaning (interpretation) of the two dreams he had

at the age of 17 until he was 39 years old [when he became the prime minister of Egypt

at the age of 30 (verse 46) + 7 years of plenty (verse 29) + 2 years of famine (45:6) = 39 years old].

Why did God make Joseph immediately aware of Pharaoh's two dreams,

but did not reveal the meaning of Joseph's two dreams to him when he was 17,

waiting until he was 39 years old?