When Paul came to the city of Philippi in Acts 16, he found Lydia by the riverside outside the city. She was a woman from Thyatira “who worshiped God” (Acts 16:14). Let me ask you a question: If you found someone “who worshiped God,” would you think, “This person is ok…No need for me to talk to them about salvation…They’re already worshiping God”? What if Paul had thought that about Lydia? Would she have been saved? The answer is, “No!”
Paul went down by the riverside and “spoke” the gospel to the women who were there (16:13). “The Lord opened [Lydia’s] heart to heed the things spoken by Paul,” and so “she and her household were baptized” for the remission of their sins (16:14-15). If she had been right with God, then there was no need for her to hear the gospel plan of salvation or “heed” it. However, she was not right with God, even though she worshiped Him, and she needed to be saved.
Worshiping God isn’t what makes one right with Him–obeying His gospel is!