We have only one true God which we are all serving. Although many people worship idol and other different man made sculptures, those people that worship those things simply tells us that they're not serving the true God.
Scripture presents God as unique and warns against worshipping idols or false gods. Therefore, from a biblical perspective, we should not assume that every form of worship is directed to the same God.
According to Jesus Christ teachings, He told us not to worship any God that is made with hands but only the God almighty our creator that we should worship. Christianity teaches that God has revealed Himself through His Word and through Jesus Christ. The Bible therefore encourages believers to examine what they believe rather than simply accepting every religious teaching as true. Sincerity alone does not make a belief correct; our worship should be based on the truth revealed by God.