To hear. To obey. One word, no seam.
"Hear, O Israel: The L-rd our G-d is one L-rd" (Deuteronomy 6:4)
"But be ye doers of the word, and not hearers only, deceiving your own selves." (James 1:22)
English has one word for hearing. Hebrew has SHAMA, and SHAMA does something English can't... it means to hear, and it also means to obey, in the same word, with no seam between them. There's no Hebrew concept of hearing G-d and then deciding separately whether to act on it. If you SHAMA, you've already moved.
Deuteronomy 6:4, the SHEMA, opens Israel's whole confession of faith with this word for a reason. Hear, O Israel wasn't a call to pay attention. It was a call to comply before the sentence finished.
So the real test of whether you heard G-d isn't a feeling of certainty. It's whether you moved. The confirmation often comes after the obedience, not before it.
Not the altar call. The parking lot after it.
Most of what G-d says to you won't come with a band playing. It'll come on a Tuesday, at the counter, in the truck, in the middle of a conversation you didn't plan to have. The building trains you to respond when the music tells you to. The field doesn't have music. It has a person in front of you and a nudge you can either move on or explain away.
Name one thing you've heard but haven't moved on because you wanted more certainty first. Take the smallest possible step on it today, outside any church building, before the feeling arrives.
What did you hear. What did you do. What happened after.