There is a scripture that says that the elect of God will hear and follow his voice implying that people who don’t join the church aren’t the elect of God. However, if God is testifying of the truth to people in false religions and the people in false religions follow the truth that they have, then why would they reject more of the truth? It would almost be like God is toying with these people.
Which scripture are you referring to?

The scripture is D&C 29:7
Perhaps using the term “false churches” is too strong or maybe I shouldn’t use the terms false and wrong interchangeably, but that is what I was taught growing up in the church and that is still said in our scripture. JSH 1: 19 – God states that all churches are wrong and in the next verse Joseph Smith specifically identifies Presbyterianism as not true. Matt 7: 21-23 seems to indicate that there are many people who think that they are doing the will of God who won’t be allowed to enter into the kingdom of heaven.