6d6fecbb_Dust__Lamentations_3__2
[0] Note the positive twist and be glad [1] תִּתֵּן לָהֶם מְגִנַּת לֵב תַּאֲלָתְךָ לָהֶם [3] Oh the double entendre. I am sure the original poet was as charitable as I am - a heart's shield could be a barrier but could also be a means to mercy - as for the oath, just consider Melchizedek and the oath of Psalm 110 as interpreted in Hebrews. [2] 
To them give shield of heart your oath to them
Dust: Lamentations 3
2