Galatians 1:8–9
8 But even if we or qan angel from heaven should preach to you a gospel contrary to the one we preached to you, rlet him be accursed. 9 As we have said before, so now I say again: If anyone is preaching to you a gospel contrary to the one you received, rlet him be accursed.
Acts 17:11
11 Now these Jews were more noble than those in Thessalonica; they received the word with all eagerness, xexamining the Scriptures daily to see if these things were so.