The first commandment

"Love your God with all your heart and life: Matthew 22:37"

As Fr.Ahn said last Sunday as part of his Homily, that's what Jews pray every morning to worship God.

I'm not sure if this makes them the top 1% of the entire brains in the world even though they are only 2% of the entire population.

Again, it has all three essential factors to improve,
IQ, EQ and PQ, and when you truly pray to God, the first thing you do is to reflect on yourself.
Therefore you are practicing those three fundamentals of improvement everyday to get where you want to be wherever that could be.