As many as received Him, to them God gave the right to become children of God, even to those who believe in His name: who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God (John 1:12-13).
As you read through the Old Testament and even the Gospel accounts, you discover that both true and false religion existed side-by-side in Israel. The Jews went through the sacrificial motions without a heart of faith in God. They feared breaking the traditions of their culture more than trusting in God’s provision (Matthew 15:8).
God’s condemnation of Israel was common of all religious people. The Jews would draw near to Me with their mouths and honor Me with their lips, but have removed their hearts far from Me and their fear toward Me is taught by the commandment of men (Isaiah 29:13). Jesus used this same verse to condemn the outwardly religious people of His day (Mark 7:6-7).
The people of Israel trusted in the works of their own efforts by following traditions and rituals. They believed that because of their physical ancestry they lived in God’s favor. Through will-power, they were good enough to be in a right relationship with God. Their faith was in their self-effort rather than what God had done. They were good, God-honoring people who tried their level best, but were void of faith in God. Instead of following God’s Way described in Scripture, they killed Jesus, the Way, the Truth, and the Life (John 14:6).
No one has ever been – or can be – saved any other way than by grace alone, through faith alone, in Jesus alone. He is the Lamb of God slain from the foundation of the world (Revelation 13:8). There is no other name under Heaven, given among men by which we must be saved (Acts 4:12).