Of course they can't be true to a man of the flesh.
But, true they are, nontheless.
God is not man.
Jesus is 100% man.
It's a riddle you will never solve until you believe what is written in the Bible.
Well, since you believe that God can contradict himself or that truth somehow can contradict itself, you need more basic understanding truth and logic than discussing who God is and isn't and who the son of God is and isn't
First, God does not contradict himself.
For instance that which is flesh is flesh and that which is spirit is spirit.
The flesh profits nothing, the spirit is what is profitable.
Until a person ceases to value facts and theories and turns to the truth, they remain unprofitable.
Only when a person starts to believe that God knows what He is talking about then a person can start learning.
Take another example, why would Jesus need to be GIVEN all authority and power? Because he had no authority and power. Do you have any authority and power? I have authority and power, Acts 1:8, Philippians 4:13. etc
Why was I given authority and power? Because I needed it to fulfill God's will in my life and since I had no spiritual authority and power, God gave to me spiritual authority and power.
Jesus Christ needed authority and power to do the Father's will, and since Jesus had none, God gave him all the apiritual authority and power he needed to fulfill God's will for his life.
But until that power and authority was given to him, he had none.
That is why it was given to him, because he had none.
Just like the truths in God's word that apply to us give us all the power and authority we need in life, even so, Jesus Christ's power and authority came from those scriptures that applied to him.
He learned them and believed them and lived them
When anyone decides to learn the scriptures that pertain to them and apply them they demonstrate the power and authority that God has prepared for them sinc the world began. Ephesians 1:3-4