God's revelation is complete. Except through scripture, He isn't speaking to anyone.
You have people who say revelation is complete. They say they are not continuationists. Not. Instead they are cessationists, which is to say that God isn't speaking any more. God was speaking. Was. He spoke to Paul and other apostles. He isn't anymore. Scripture is complete. It is enough. Those people say they believe that.
People have a decision to make of varying degrees of importance all the way down to paper or plastic. In making the decision, they say that God spoke to them. He told them what to do.
But the people said that God wasn't speaking anymore. This is a contradiction. This is where someone, maybe me, should say that "you can't have it both ways." God is either not speaking anymore or He is still speaking. It can't be both.
On one hand people will say that they are cessationists. One the other hand the same people say that God still speaks to them.
In many instances, people who say they are cessationists still use passages where God speaks to prophets or apostles as a basis for God speaking to them today. Those prophets and apostles did not have the completed, written Word of God. God was still speaking to people. Those texts or passages of scripture are not normative for today. There is no lesson in them about God speaking today still to people. God was still speaking directly to people until the Word of God was complete in the first century.
To make decisions today, people should not expect God to speak to them. If they do hear a voice, they should not consider it to be God speaking to them. There is no way to know if it is God speaking to them, no validation for that. The apostles had validation. They had signs and wonders. Sign gifts have ceased.
What is the validation to people, who say they are cessationists, that God is speaking to them today? I've heard several and none of them are scriptural. Not necessarily in any order, but first, they say they are receiving God's blessing, so it must be God speaking. Second, they say that they have seen tremendous evangelistic results, so it must be God speaking. Third, they say that they are a very, very good Christian by many other's opinion, so it must be God speaking. Fourth, they say God hasn't killed them, so He must not be unhappy, so it must be God speaking. Fifth, they say that they are seeing answers to prayer, so it must be God speaking. Sixth, they say that other people are saying that it must be God speaking to them. Seventh, they say that they prayed really long and hard for God to speak, so He must be speaking to them, because God answers prayer. Eighth, they say God must be speaking, because after He spoke, what God said to do worked out very, very well.
There are probably more "validations" than the above list of eight. What really undoes all eight of them and any others is that God isn't speaking to people any more. God said He was done speaking in His Word, which is validated (actually validated). God confirmed His Word and then said He was done, because His Word was finished.
I'm not happy when I hear someone say that God spoke to them. I don't believe God spoke to them.
We should read the Bible, study the Bible, and then obey the Bible. For decisions in our individual will of God, we should apply biblical principles. Areas that are non-scriptural, where the Bible doesn't speak, we have liberty. Again, we use biblical principles to make the best decision we can. We should be satisfied with that.