Is the tripartite God the judge in the Old Testament, and Jesus the appointed only judge in the New Testament? In the Old Testament, Justice was meted out immediately by God, when Uzza touched the Ark, was this LORD the tripartite Godhead or the pre-incarnate Jesus.
All Scripture is quoted from the King James translation unless otherwise noted.

1st Chronicles 13:10 (New revised King James version) And the anger of the LORD was kindled against Uzza, and he stroke him, because he put his hand to the ark: and there he died before God.
Revelation 20:11-12  And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them.
12  And I saw the dead, small and great, stand before God; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works.

Jesus said:

John 5:26 and 27  For as the Father hath life in himself; so hath he given to the Son to have life in himself; 27  And hath given him authority to execute judgment also, because he is the Son of man.

and also:

John 5:25  Verily, verily, I say unto you, The hour is coming, and now is, when the dead shall hear the voice of the Son of God: and they that hear shall live.

It is hard for me to determine if the Trinity or the pre-incarnate Jesus was the judge in the Old Testament, because of Jesus statement that he is the son of man, and whether that would be applicable prior to his earthly existence.
my question is not concerned with the immediate judgment, but who is making the judgment. In my use of the Old Testament quote was not to emphasize the quickness, but rather the fact that Uzza was killed by the 'LORD' while in the Revelation it is clear that it is Jesus who is judging. And if these are the same.
The use of the word 'LORD' in the Old Testament seemingly does not have the same connotation as it does in the new. Since in the New Testament it is used for Jesus also.
Old Testament:

Genesis 2:4  These are the generations of the heavens and of the earth when they were created, in the day that the LORD God made the earth and the heavens,

New Testament:

Matthew 7:21  Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Matthew 24:42  Watch therefore: for ye know not what hour your Lord doth come.

In Matthew 24:42 it can only be referring to Jesus since it refers to his second coming.
I draw your attention to the past tense in:


  For the Father judges no one, but has committed all judgment to the Son - John 5:22 KJV (emphasis added)


This said pre-resurrection and glorification; Together with the implications of -


  For God sent not his Son into the world to condemn the world; but that the world through him might be saved. - John 3:17 KJV


ie Judgment was not part of Jesus' mission during his 'first coming' (the incarnation); and also:


  Jesus Christ the same yesterday, and to day, and for ever. - Hebrews 13:8 KJV


It should be fairly clear that the one who is referred to in:


  Because he hath appointed a day, in the which he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead. - Acts 17:31 KJV


was, is and will be the judge of all mankind from the very beginning and until the very end of all ages.