Who judges and repays?

John 5:22 NWT

For the Father judges no one at all, but he has entrusted all the judging to the Son,

Who judges?
Matthew 16:27 NWT

For the Son of man is to come in the glory of his Father with his angels, and then he will repay each one according to his behavior.

Who is coming?
What is the Son of Man going to do?
Revelation 22:12 NWT

“‘Look! I am coming quickly, and the reward I give is with me, to repay each one according to his work.

Who is coming with the reward?
Revelation 22:13 NWT

I am the Alʹpha and the O·meʹga, the first and the last, the beginning and the end.

Who is speaking?
Why does Jesus say he is the Alpha and Omega and the first and the last and the beginning and the end?
If Jesus is a creature, how can he say he is the beginning and the end?
Revelation 22:20 NWT

“The one who bears witness of these things says, ‘Yes, I am coming quickly.’”
“Amen! Come, Lord Jesus.”

Can we confirm that this is Jesus speaking?
Who is repaying each according to their work?
If Jesus is the beginning and the end, how can he have a beginning?
Isaiah 40:10 NWT

Look! The Sovereign Lord Jehovah will come with power, And his arm will rule for him. Look! His reward is with him, And the wage he pays is before him.

Who is coming?

What does he have with him?
Psalm 96:13 NWT

Before Jehovah, for he is coming,
He is coming to judge the earth.
He will judge the inhabited earth
with righteousness
And the peoples with his faithfulness.

Revelation 22:12-13 NWT

“‘Look! I am coming quickly, and the reward I give is with me, to repay each one according to his work. I am the Alʹpha and the O·meʹga, the first and the last, the beginning and the end.

If Jesus is not Jehovah, why is he saying that His reward is with Him to repay?