Verses with the word worshipper in the New Testament (2 verses):

John 9:31
Now we know that God heareth not sinners: but if any man be a worshipper of God, and doeth his will, him he heareth.

Acts 19:35
And when the townclerk had appeased the people, he said, Ye men of Ephesus, what man is there that knoweth not how that the city of the Ephesians is a worshipper of the great goddess Diana, and of the image which fell down from Jupiter?