1. for God is greater than our heart and knows all things. 1 John 3:20
2. Great is our Lord, and mighty in power; His understanding is infinite. Psalm 147:5
versus
3. But as for that day or hour, no one knows, not even the angels in heaven, nor the Son, but only the Father. Mark 13:32
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So we've all heard this problem before. Omniscience is inherent to God, by logic and scripture, etc…yet the second person of the trinity (not just his incarnation as Jesus of Nazareth) is clearly not omniscient. Neither the Son nor the angels in heaven know about the day/hour of the end times.
Some have said that if Jesus was omniscient then he wouldn't be fully human, so he had to veil some of his power. But this creates a paradox, if he isn't fully omniscient then he isn't fully God. You can't have it both ways.
If you met a Jesus and asked him "are you omniscient? do you know all things?" and he plainly said "no, I don't, only the Father does." then why would you be obliged to worship him as God? Clearly there is a disconnect.
I never found a convincing way to untangle this problem. "He humbled himself" doesn't really make sense.