I explained how God made sure that people who never heard of Jesus or the OT could discern sufficiently from general revelation how to be saved (below), but your post offered no explanation. IOW, creation is the universal "physical appearance".
Paul's inspired special revelation affirmed general revelation, which was the means/basis of salvation for most of humanity for most of history until the Bible became more available in western societies. In my experience I have been the only one who has asked the obvious question
“What is God's requirement for salvation (GRFS) for those who have never heard of Jesus (or Moses)?” (which includes everyone living B.C. (or apart from Canaan) and millions of people who have lived A.D.)
If God loves the world (
John 3:16) and wants everyone to be saved (
1Tim. 2:3-4,
Ezek. 33:11), then He must provide an opportunity. God’s just judgment is illustrated by Jesus in the Parable of the Talents (
Matt. 25:14-29), which indicates that God will judge souls on the basis of the truth (Word = Christ per
John 1:1f.) they have received.
General revelation includes meditating on the natural world or God’s supernatural work and moral conscience. Paul said men are without excuse, both because God’s eternal power and divine nature (love) are manifested by creation (
Rom. 1:20), and because a proto-gospel has been proclaimed to everyone under heaven implicitly or in pre-NT foreshadowings (
Col. 1:23,
Rom. 10:13-18,
Gal. 3:8). He also taught that all normal humans have an inner conscience or “common” sense (
Rom. 2:14-16), which manifests morality or a moral Authority in every culture, perhaps beginning with the Golden Rule (
Matt. 7:12).