"God's word is pure and can only be truth." - Amen to that! But, what is the 'word of God'? Where do we find it?
Because, in Scripture, these proper names are consistently applied to the Creator. For example, if 'Lord' is not a proper title for God then -- when 'doubting Thomas' addressed Jesus as 'my Lord, and my God' -- should Jesus have corrected him? Or another, to whom was David referring when he said, 'the LORD said unto my Lord, sit at my right hand...' ([Psalm 110:1](https://www.esv.org/Ps110.1)) -- a passage later revealed as speaking of Christ ([Heb. 1:13](https://www.esv.org/Hebrews+1/))? And wasn't 'Jesus is Lord--not Caesar!' a rather important theme in the gospels? In fact, God revealing his nature by names, specifically to his covenant people, is a theme running all through Scripture.
Unless I've misunderstood your meaning, I would challenge the idea that we should 'listen to our hearts':
```
[9] The heart is deceitful above all things,
and desperately sick;
who can understand it?
```
[Jeremiah 17:9](https://www.esv.org/Jeremiah+17/), ESV
So, if we cannot (or at least should not) 'look within,' where should we look? Peter says:
> And this voice which came from heaven we heard, when we were with him in the holy mount. We have also a _more sure_ word of prophecy; whereunto ye do well that ye take heed, as unto a light that shineth in a dark place, until the day dawn, and the day star arise in your hearts: Knowing this first, that no prophecy of the scripture is of any private interpretation. For the prophecy came not in old time by the will of man: but holy men of God spake [as they were] moved by the Holy Ghost.
[2 Peter 1:18-21](https://blb.sc/002gwR), KJV]
...where is point is, yes we had these experiences and we're sharing this testimony, but the word of God is _more sure_, etc. - and you don't have to 'trust me, bro' - read it for yourself (like the Bereans), "taste and see..."
🤙