All moves of the Spirit, insights, all “whispers in the heart” should be checked against Scripture. There is a reason why God besides sending us His Son & His Holy Spirit, also gave us His Word. How can we know for sure something is from God? By reading the Bible. Our final authority in doctrine & practice is the Word of God, not men. If any doctrine, manifestation, spiritual exercise (activation), etc. is NOT in the Scriptures, then beloved we should avoid it, we don’t need it! Be very careful with those teachers who say they have new revelations from God! 2 Tim. 3:16-17 says:
All Scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness, 17 that the man of God may be complete, thoroughly equipped for every good work.