This is now the second time that this passage in the psalms, that is, Psalm 95, has been referred to by the writer of Hebrews. Notice the contempt which the Lord discloses for the unbelieving Jews. Their dead bodies were referred to as carcasses. There was little mourning, evidently, for these unbelievers who refused to hearken to the voice of God. The wanderers in the desert were evidently idolaters along with their other sins.
Most unbelievers are idolaters of one sort or another.
But ye have borne the tabernacle of your Moloch and Chiun your images, the star of your god, which ye made to yourselves. When people reject the authority of the Lord God, they begin a slide that carries them down to destruction. Stephen pointed that out to the Jews in Jerusalem just a few years before this present epistle was written, and went on to preach them a sermon that so enraged them that they stoned him to death. Remphan is the planet Saturn, the lovely jewel with the ring around it that God created on the 4th day of creation, but was worshipped by pagan idol worshippers who ignored the obvious truth that it was a created thing, and not a god in itself. The Word of God illuminates many secrets for those who are willing to look with an eye of faith.