Showing Off is of the Devil
Our Lord Jesus Christ.
Many prophecies in the Old Testament were made about the coming Messiah. Time came when our Father in Heaven sent Jesus Christ on earth as the promised Messiah. The strange thing was that when Jesus came on earth, he never showed off that he was the promised Messiah. He always kept a low profile and advised his disciples never to tell anyone that he was the Messiah.
How Satan shows off.
Satan is an expert in showing off. When he was still serving in Heaven, he always wanted to show off that he was a very important person. That he knows more than anyone else. He wanted to show every being in Heaven that he was even greater than God himself! This was too much, God cast him away.
Showing off generates hatred.
Showing off generates a spirit of hatred within some of the hearts seeing or listening to you. This hatred will destroy you. Young Joseph always wanted to show off the special robe his father (Jacob) had made for him. This created a lot of hatred for him from his brothers.
Showing off comes before downfall.
Goliath showed off his armor, not knowing he was about to die. Herman showed off his royal garments, not knowing that soon he would be hanged. King Nebuchadnezzar showed off his accomplishments on earth, not knowing that he was about to turn into a wild being. Sennacherib, King of Assyria showed off his great army; not knowing that God would soon send an angel who would annihilate all his fighting men. He withdrew to his own land in disgrace.
Do not show off.
As a Christian, I advise you to desist from showing off who you are, or your achievements. If you do this you will be at peace with others and you will get peace in your heart.