Great questions!

Philippians 2:1-11 answers them all.

Basically: Jesus is God, existing in His very nature as God.

But Jesus chose to empty Himself and take on the role of a servant, a human.

Jesus limited Himself down to the experience of a normal human person. That meant Jesus only knew what a normal person knew, or could learn. That’s why Jesus didn’t know the hour of His own return — He had emptied that knowledge.

That’s why Jesus had to pray to the Father — because that’s how normal people communicate with the Father.

That’s why Jesus kept striving to do the Father’s will — because that’s what normal people must strive to do.

Philippians 2:1-11 ends with Jesus returning to all He had emptied, being no longer limited. Jesus returns to the Name above all Names — the Name of God, which is given to Him.

All creatures — all created beings — worship Jesus, because Jesus is not a created being. Jesus is God, and the Father restores Jesus to everything He had emptied.

Here’s the passage:

In your relationships with one another, have the same mindset as Christ Jesus:

Who, being in very nature God,
did not consider equality with God something to be used to his own advantage;
rather, he made himself nothing
by taking the very nature of a servant,
being made in human likeness.
And being found in appearance as a man,
he humbled himself
by becoming obedient to death—
even death on a cross!
Therefore God exalted him to the highest place
and gave him the name that is above every name,
that at the name of Jesus every knee should bow,
in heaven and on earth and under the earth,
and every tongue acknowledge that Jesus Christ is Lord,
to the glory of God the Father. (Philippians 2:5-11 NIV)