Judas was as lost as last years easter egg and of course Jesus knew it, but He also turned Judas over to Satan which sealed his fate and brought about the crucifixion because it was Satan's desire to kill Jesus.
Unless you believe God caused Judas to sin, which would contradict James 1:13, then Judas had to be freely acting on his own. God was not "setting up" Judas, it was not a case of entrapment like when our law enforcement officers pretend to be foreign sheik who offers a bribe to a politician. That would be God tempting Judas which the scriptures say God never tempts any man to sin.
So Judas had to be acting entirely on his own free will, yet God knew that Judas would sin. He knew the thoughts that would go on in his heart, he knew the thoughts of those who wished to kill Jesus and approached Judas.
And God foretold of Judas betraying Jesus for thirty pieces of silver hundreds of years before it actually occured. So obviously God can foresee and know the free will actions of men. This is what Van denies.
Zec 11:12 And I said unto them, If ye think good, give
me my price; and if not, forbear.
So they weighed for my price thirty pieces of silver.
13 And the LORD said unto me, Cast it unto the potter: a goodly price that I was prised at of them. And I took the thirty
pieces of silver, and cast them to the potter in the house of the LORD.
God did not cause the priests to give Judas thirty pieces of silver, he does not cause or even tempt a man to sin.
Mat 26:14 Then one of the twelve, called Judas Iscariot, went unto the chief priests,
15 And said
unto them,
What will ye give me, and I will deliver him unto you? And they covenanted with him for thirty pieces of silver.
16 And from that time he sought opportunity to betray him.
It is obvious that Judas knew the cheif priests wanted to capture Jesus. I do not know if he knew they would kill him. But there is no mention here of God causing this. Judas wanted money, I have read that 30 pieces of silver would be about $250,000 dollars in today's money. This is what tempted Judas.
Mat 26:53 Thinkest thou that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?
54 But how then shall the scriptures be fulfilled, that thus it must be?
55 In that same hour said Jesus to the multitudes, Are ye come out as against a thief with swords and staves for to take me? I sat daily with you teaching in the temple, and ye laid no hold on me.
56 But all this was done, that the scriptures of the prophets might be fulfilled. Then all the disciples forsook him, and fled.
Jesus allowed himself to be taken, he willingly laid down his life for us. But he did not cause or tempt the actions of these men.
So, I agree that God brought about his prophecy, but that does not mean he determined others to sin.