True Basis for Boasting

Jeremiah 9:23-24

Thus saith the Lord, Let not the wise man glory in his wisedome, nor the strong man glorie in his strength, neyther the riche man glorie in his riches.

But let him that glorieth, glorie in this, that he vnderstandeth, and knoweth me: for I am the Lord, which shewe mercie, iudgement, and righteousnes in the earth: for in these things I delite, sayth the Lord.