Here is something that Oliver Peng said, and I posted in another post.
"A person that can spot counterfeit money does not spend all his time studying the counterfeits (error). He spends all his time studying the real thing (Jesus)"
And that is how he knows what is error, because he is spending his time becoming intimate with the One who is True/Truth.
1Jo 5:20 And we know that the Son of God is come, and hath given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.
Spend time with the Lord in prayer, live in His Word and do it.
1. Stay with the simplicity that is in Christ. Anything or anyone that takes you away from this, is error.
2Co 11:3 But I fear, lest by any means, as the serpent beguiled Eve through his subtilty, so your minds should be corrupted from the simplicity that is in Christ.
2. Learn who the real Jesus is. His Character, words and life.
2Co 11:4 For if he that cometh preacheth another Jesus, whom we have not preached, or if ye receive another spirit, which ye have not received, or another gospel, which ye have not accepted, ye might well bear with him.
3. Come to the Lord with your whole heart when you read the Word or you will just have a religious experience. The Pharisees just had a religious experience and you will be setting yourself up against Jesus if you just want to be religious.
Joh 5:39 Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me.
4. Don't just be a hearer of God's Word, but a Doer.
Joh 5:38 And ye have not his word abiding in you: for whom he hath sent, him ye believe not.
5. Walk in the Love of God.
Joh 5:42 But I know you, that ye have not the love of God in you.
6. Get free from the fear of man and do not seek honor from man.
Joh 5:43 I am come in my Father's name, and ye receive me not: if another shall come in his own name, him ye will receive.
Joh 5:44 How can ye believe, which receive honour one of another, and seek not the honour that cometh from God only?
7. Put the theology books away and consume God's Word.
1Co 8:1 Now as touching things offered unto idols, we know that we all have knowledge. Knowledge puffeth up, but charity (love) edifieth.
8. Cast off the works of darkness and make no provision for the flesh.
Rom 13:12 The night is far spent, the day is at hand: let us therefore cast off the works of darkness, and let us put on the armour of light.
9. Put on the armor of God. The armor of God is Jesus Christ. Eph. 6:11-17
Rom 13:14 But put ye on the Lord Jesus Christ, and make not provision for the flesh, to fulfil the lusts thereof.
10. 2 Corinthians 10:3-5,6
Your Bible says you are in a war, and that you are to take captive your thoughts? Does the Word say you are to destroy all speculations and every lofty thing (every fiery trial) raised up against the knowledge of God?
You are to TAKE EVERY THOUGHT CAPTIVE! In this the way you PUT ON THE LORD JESUS CHRIST. YOU ENTHRONE JESUS AS LORD IN YOUR HEART and you resist every lie of the devil raised up against the Word of God. Do these weapons destroy the strongholds of the devil? (Compare verse 4 with Hebrews 4:15-16, 2:18.)
Does your Bible say that when you take every thought captive you then punish all disobedience? In other words, you put to death the rebellious, lustful thoughts raised up against the knowledge of God. (Read Romans 8:14,13)
These are a few things you will find that will help you hear the Lord's voice.
But notice, I took everything from the Word of God. Not any theology books. My point is: Live in God's Word and do what the Lord is telling you. You need the whole counsel of God, not just these 10 points. It is just an example how His Word is a lamp unto our feet and a light to our path.
He has given us everything that pertains to life and godliness by His Word and Spirit.
2Pe 1:3 According as his divine power hath given unto us all things that pertain unto life and godliness, through the knowledge of him that hath called us to glory and virtue:
2Pe 1:4 Whereby are given unto us exceeding great and precious promises: that by these ye might be partakers of the divine nature, having escaped the corruption that is in the world through lust.
And this is not about memorizing a 1000 do's and don'ts. It is about loving the Lord and His Word above all things and all people, even if everyone else is compromising. And you will suffer, but don't think it strange regarding the fiery ordeal that has come upon you. You will suffer in the flesh as you obey God's Word and carry your cross and you will suffer because you don't want to be a man pleaser.
Jer 15:16 Thy words were found, and I did eat them; and thy word was unto me the joy and rejoicing of mine heart: for I am called by thy name, O LORD God of hosts.
Hide the Word of God in your heart that you may not sin against Him.
Psa 119:11 Thy word have I hid in mine heart, that I might not sin against thee.
All will be well and you will hear God once you remove all the other static. He will lead you and guide you.