The brothers immediately sent Paul and Silas away by night to Berea, and when they arrived they went into the Jewish synagogue. Now these Jews were more noble than those in Thessalonica; they received the word with all eagerness, examining the Scriptures daily to see if these things were so. Many of them therefore believed, with not a few Greek women of high standing as well as men.
— Acts 17:10-13 (ESV)
I’ve often seen this short passage of scripture used to admonish Christians to take care with the things they believe, and that’s a good thing. Jesus and the Apostles all warned us that false teachers would try to lead us astray. If you really want to know the truth about the gospel of Christ there’s only one guaranteed source and that’s the word of God. Test everything about doctrine or the gospel against scripture, whether it’s the message from your pastor, the words of your favorite spiritual leader, or especially something you read about spiritual matters on the Internet.