The Bible speaks of a wall that separated all mankind into two parts. In Ephesians 2 the Law, the Ten Commandments, is called βthe middle wall of partition.β
The Law was given to Godβs covenant people. The Gentiles had been given up long before at the Tower of Babel and God had called out Abraham and his seed and had given them the Law. They broke the Law, however, so that Rom. 3:19 says:
βWhatsoever the law saith it saith to them that are under the law, that every mouth may be stopped and all the world may be brought in guilty before God.β
Because of the broken Law all men have been placed on the same level, but this was also Godβs purpose of grace: βFor God hath concluded them all in unbelief: that He might have mercy upon allβ (Rom. 11:32). And thus God offers salvation to all through Christ, who died for our sins at Calvary. This is why Eph. 2:13-16 says:
βBut now, in Christ Jesus, ye who once were far off are made nigh by the blood of Christ. For He is our peace, who hath made both one, and hath broken down the middle wall of partition between usβ¦ that He might reconcile both unto God in one Body by the cross, having slain the enmity thereby.β
Thank God there is no βWallβ between God and those who trust His Son, nor between believers who have been made βone Body in Christ.β source