God will judge people in non-Christian religions who have not heard about the truth righteously and fairly (Psalm 98:8-9). Even if a person has not been introduced to the name of Jesus, the Bible says, he intuitively knows about God from creation, “The heavens declare the glory of God, and the sky above proclaims his handiwork. Day to day pours out speech, and night to night reveals knowledge. There is no speech, nor are there words, whose voice is not heard. Their voice goes out through all the earth, and their words to the end of the world” (Psalm 19:1–4).
Although, God speaks to people in other religions through different means, it is up to them to respond to His voice or reject it. So, salvation depends on the choices of men and their responses to whatever light they have about God. The Lord will certainly not judge people for a truth they never had the chance to know and learn (Acts 17:30). But those who refuse to search for the truth He will also judge “Therefore to him that knoweth to do good, and doeth it not, to him it is sin” (James 4:17).
Sadly, hearing the truth may not always guarantee that people will obey it. The New Testament says that people may know about God, but still reject Him: “For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who by their unrighteousness suppress the truth. For what can be known about God is plain to them, because God has shown it to them. For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse” (Romans 1:18-20).
Praise the Lord we can rest in the fact that if God was willing enough to offer His only begotten Son to suffer and die for those that did not know Him (John 3:16), then, He will judge His children in other religions righteously (Psalms 72:2).
In His service,