Dear Diane:

Yes, Jesus knew that Judas would kill himself. Jesus is God. God is omniscient, He knows all things. God exists in the eternal present. He is outside of time. That means that He sees the eternal past, the eternal future, and the present all at the same time, as it were. There is nothing that God does not know. As the Baltimore Catechism states: Q. Does God know all things? A. God knows all things, even our most secret thoughts, words, and actions.

Since Jesus is God, there is no question that he knew of the fate of Judas. He knew that, and he knows us and our fate, long before the universe was even created (Romans 8:29, Ephesians 1:4, Jeremiah 1:5, et. al.)

If this preacher is making the point that Matthew 6:24 is somehow proof that Jesus did not know that Judas would kill himself, then that preacher has a problem with thinking clearly. Jesus statement in Matthew 6:24 in no way suggests that Jesus was not aware of Judas' fate. In fact, the statement supports that Jesus knew. Would not it be better not to have been born than to be born, betray God, and kill ourselves. The preacher's point is a non sequitur. 

As for "where's that is the Bible," that is a question that Protestants always ask. It is based on the man-made and novel invention and fallacy of sola scriptura (the Bible Alone). This fallacy never existed in the universe until the sinful rebellion of Martin Luther. It too is a non sequitur because it does not follow that the Bible is final authority on the faith, which it is not. In addition, the Bible does not answer every question, nor does it even contain all the teachings of Jesus (John 21:25, et al). The Church did not come from the Bible, the Bible comes from the Church. In fact, the decision about which writings that were being distributed around in the first century are actually scripture and which were not, was made upon whether or not those writings conformed to the oral teaching of the Church. We must remember that the Church was teaching the faith for decades before the New Testament writings were even written, and centuries before the New Testament canon was settled upon. As St. Augustine said in A.D. 397, "I would not believe in the Gospel myself if the authority of the Catholic Church did not influence me to do so." 

With that said, all that is necessary is to show that Jesus is God. Once that is established all the rest follows as the nature of God is the nature of God. That nature includes omniscience (knowing all things). Many verses speak of the omniscience of God, such as Romans 8:29, Ephesians 1:4, Jeremiah 1:5, among others.

We know that Jesus is God because the Church and the Bible tells us. There are many verses that reveal Jesus as God. The primary verse is John 1:1-4

(John 1:1-4, 14)  In the beginning was the Word, and the Word was with God, and the Word was God. He was in the beginning with God. All things came into being through Him, and without Him not even one thing came into being that has come into being. In Him was life, and the life was the light of men.... And the Word became flesh, and tabernacled among us. And we beheld His glory, the glory as of the only begotten of the Father, full of grace and of truth.

The logos, the Word, which is God, became flesh. This is Jesus. Jesus is God, the Second Person of the Blessed Trinity. Since Jesus is God, he knows all things, and thus he knew what Judas would do before he did it. He knew that before the universe was created.

God Bless,
Bro. Ignatius Mary