Here it is again
Made one body at the cross
The twain made one new man are those who first trusted in Christ (the "we") beginning with Paul (1 Timothy 1:16 KJV) and those of us (the "ye") who also trusted during Paul's second sending.
Ephesians 1:12 That we should be to the praise of his glory, who first trusted in Christ.
Ephesians 1:13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
Ephesians 2:14 For he is our peace, who hath made both one, and hath broken down the middle wall of partition between us;
Ephesians 2:15 Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace;
Ephesians 2:16 And that he might reconcile both unto God in one body by the cross, having slain the enmity thereby:
Ephesians 2:17 And came and preached peace to you which were afar off, and to them that were nigh.
All that by the cross, not "at the cross" (sssssstop trying to change the word of God) and the Body of Christ NOT replacing Israel future.
And concerning the good news. Can you see a difference in WHO and WHAT?