At the time Jesus promised Judas that he will be one of the twelve disciples sitting on thrones judging the twelve tribes of Israel, he had no idea that Judas would end up betraying him. That clearly proves that Jesus had no idea that Judas would betray him. It just proves that Jesus was not aware of the unknown so he couldn't be God knowing everything from the beginning. Jesus was a con man. The dudes who followed him pretty much satisfy his craving for attention so he made promises to them so they feel special. One of those that he made empty promises to was Judas. Jesus was an empty vessel who never accomplished anything in life because he chose to just goof off with his compadres.
Answer: My friend do you take time to read at all? I assume if you did you would've find the answer but if you have missed it let me explain it for you more in details and answer the obvious questions you failed to ask.
Note: My answers are backup by the scripture in the bible and not just what I or anyone else think....Take note of that, the answer to all your questions are found in the BIBLE.
The answer is that Jesus selected him because this was part of God’s plan. Jesus drops the first hint that He would be betrayed while He is speaking to a large crowd of disciples,
John 6:64 :: But there are some of you that believe not. For Jesus knew from the beginning who they were that believed not, and who should betray him.
John 6:66 says that many of His "disciples" left Him after this. Why did so many leave Jesus? The answer is many did not really believe in Jesus. Is it not interesting that Jesus called them betrayers. Those who are real Christians will not turn traitor and desert Jesus. This passage also tells us that this was no surprise to Jesus. He knew who the traitors would be.
Jesus Chose Judas. Yet, Jesus chose Judas Iscariot as a disciple anyway,
John 6:71 :: He spake of Judas Iscariot the son of Simon: for he it was that should betray him, being one of the twelve.
And John 12:4 tells us again that Judas was intending to betray Jesus. Why did Jesus choose Judas? There are probably many reasons. One reason could be that Jesus wanted to show us how to love even our enemies. Another reason could be that God wanted to leave an example for us that even those we trust may not be real. John 13:22tells us that even after Jesus told His disciples that one them would betray Him, they did not know who that was.
Why Jesus Chose Judas. The main reason Jesus chose Judas is given to us in John 13:18-22.
John 13:18-22 :: 18 I speak not of you all: I know whom I have chosen: but that the scripture may be fulfilled, He that eateth bread with me hath lifted up his heel against me.
19 Now I tell you before it come, that, when it is come to pass, ye may believe that I am he.
20 Verily, verily, I say unto you, He that receiveth whomsoever I send receiveth me; and he that receiveth me receiveth him that sent me.
21 When Jesus had thus said, he was troubled in spirit, and testified, and said, Verily, verily, I say unto you, that one of you shall betray me.
22 Then the disciples looked one on another, doubting of whom he spake.
It was done so that the prophecies of old would be fulfilled. The prophecy quoted here is Psalm 41:9. Judas was such an evil man that John 17:12 tells us that Judas is the son of perdition.
John 17:12 :: While I was with them in the world, I kept them in thy name: those that thou gavest me I have kept, and none of them is lost, but the son of perdition; that the scripture might be fulfilled.
Here is another instance of fulfilled prophecy. Judas did not lose his spiritual life; he never had it. This has been clear since John 6:64. This is not a picture of a swan becoming dirty, but of a pig that never left the mud. The next passage is hard to understand for one who had been so close to Jesus, but it shows how sinful a person can be, even people in the church.
Luke 22:3 :: Then entered Satan into Judas surnamed Iscariot, being of the number of the twelve.
So we should not be surprised that churches have problems.
Acts 1:16-17 :: 16 Men and brethren, this scripture must needs have been fulfilled, which the Holy Ghost by the mouth of David spake before concerning Judas, which was guide to them that took Jesus.
17 For he was numbered with us, and had obtained part of this ministry.
This is our final reference to fulfilled prophecy regarding Judas.
Conclusion: Why did Jesus choose Judas? The major reason is to fulfill prophecy. Jesus knew that Judas would betray Him. God knew it long ago. Jesus could have chosen someone else, but scripture had to be fulfilled. This is an important lesson for Christians. Just because someone says they are a Christian does not make them a Christian. 1 John 2:19 explains why some do not remain.
1 John 2:19 :: They went out from us, but they were not of us; for if they had been of us, they would no doubt have continued with us: but they went out, that they might be made manifest that they were not all of us.