>  The pieces of armor

When Paul concludes his letter to the Christians in Ephesus and refers to the various pieces of the armor of God one would think he had previously, in that letter, explained to them of what this armor consists.  And he does:

2:8For by grace are ye saved through faith; 

2:8 and that (faith) not of yourselves: it is the gift of God:

 9Not of works, lest any man should boast.

2:10 For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them.

1:2 Grace be to you, and peace, from God our Father, and from the Lord Jesus Christ.

1:13In 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,

 4:20But ye have not so learned Christ;

 21If so be that ye have heard him, and have been taught by him, as the truth is in Jesus: