How do you react when others boast of Jesus, or when others rejoice in The Lord, speaking well of Him, praising Him, loving Him openly and freely? Does it also cause you to rejoice? If the answer is no, if the worship of others makes you uncomfortable, uneasy, or bitter, it is evidence of pride. For The Holy Spirit says,
"My soul shall make her boast in The LORD: the humble shall hear thereof, and be glad." [Psa 34:2]
Those who are humble are glad at the hearing of such things. The humble hear others boasting of The Lord’s work, of His character, of His glory and they are glad. For the humble, to see pure worship brings delight.
Remember the example of Michal, David’s wife, who was punished for her reaction to David’s worship, having “no child unto the day of her death.” David returned with the Ark of God and was overjoyed. So much so that he “danced before The LORD with all his might.” When he returned to his wife she reacted bitterly,
"And Michal the daughter of Saul came out to meet David, and said, 'how glorious was the king of Israel to day, who uncovered himself to day in the eyes of the handmaids of his servants, as one of the vain fellows shamelessly uncovereth himself!'" [2 Sam 6:20]
David rebukes Michal, telling her that what he did “was before The LORD…therefore will I play before The LORD.” David goes further, saying, “And I will yet be more vile than thus, and will be base in mine own sight.” [2 Sam 6:22]
Michal was not thinking of the joy which David’s worship brought The LORD. She was thinking purely of status and the thoughts of men. She was worried about the image of David and herself: she was proud, and because of her pride, she did not rejoice at the worship of David.
Our reaction to others’ praise to God can reveal a lot to us. If we react negatively, we must repent and ask The Lord to change our hearts. The boasting/praise/worship of others directed toward Jesus should bring us gladness.