And here I thought you were an "expert" in Biblical traditions. Can't know everything, I guess. Raising of hands in praise to God is an ancient practice, in fact the OT Jews made it a tradition and I can only assume God received the genuine show of praise they meant since he never forbid it. See the following for examples:
Nehemiah 8:6
And Ezra blessed the LORD, the great God. And all the people answered, Amen, Amen, with lifting up their hands: and they bowed their heads, and worshipped the LORD with their faces to the ground.
Psalm 141:2
Let my prayer be set forth before thee as incense; and the lifting up of my hands as the evening sacrifice.
I honestly believe that we should do so unapologetically. God desires the "sacrifice of praise".
Did they? You mean the Jews worship "Portestant" style? Nehemiah 8:6 And Ezra blessed the LORD, the great God. And all the people answered, Amen, Amen, with lifting up their hands: and they bowed their heads, and worshiped the LORD with their faces to the ground
The Hebrew text Tanakh) says "and they bent their heads and prostrated themselves to the Lord on their faces to the ground."
Now, I have yet to see Protestants prostrate themsleves face to the ground...
Lifting up the hands is not the same as stretching out arms of the arms, but turning their palms upwards, boatbums.
This is like night and day what the Portestants do...