The way to determine ‘which doctrine is true’ (even if apostle Paul preached it) is to ‘check it against written Scripture (the originals, not necessarily translations which may contain translational errors, stick to literal ones for increased accuracy)’ as Acts 17:11 clearly applauds such an attitude instead of condemning it. Here is this verse in several translations:

New International Version
Now the Berean Jews were of more noble character than those in Thessalonica, for they received the message with great eagerness and examined the Scriptures every day to see if what Paul said was true.

New Living Translation
And the people of Berea were more open-minded than those in Thessalonica, and they listened eagerly to Paul’s message. They searched the Scriptures day after day to see if Paul and Silas were teaching the truth.

English Standard Version
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.

Berean Study Bible
Now the Bereans were more noble-minded than the Thessalonians, for they received the message with great eagerness and examined the Scriptures every day to see if these teachings were true.

Berean Literal Bible
Now these, who were more noble than those in Thessalonica, received the word with all readiness, on every day examining the Scriptures, whether these things were so.

New American Standard Bible
Now these were more noble-minded than those in Thessalonica, for they received the word with great eagerness, examining the Scriptures daily to see whether these things were so.

King James Bible
These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so.