Psalm 18:35-36

You are sheltered in the arms of a loving Father and your past, present and future is in His hands. Put on the breastplate of righteousness who stands at the right hand of the Father, Jesus Christ, trusting in Him alone and you will be saved. He takes everything meant to destroy you and changes it for your good. Keep the faith!

The use of battle armor, such as a shield, as an image of God’s provision for the righteous, is found in both the OT and NT : 

Ephesians 6:14-20

¹⁴ Stand therefore, having girded your waist with truth, having put on the breastplate of righteousness, ¹⁵ and having shod your feet with the preparation of the gospel of peace; ¹⁶ above all, taking the shield of faith with which you will be able to quench all the fiery darts of the wicked one. ¹⁷ And take the helmet of salvation, and the sword of the Spirit, which is the word of God; ¹⁸ praying always with all prayer and supplication in the Spirit, being watchful to this end with all perseverance and supplication for all the saints— ¹⁹ and for me, that utterance may be given to me, that I may open my mouth boldly to make known the mystery of the gospel, ²⁰ for which I am an ambassador in chains; that in it I may speak boldly, as I ought to speak. 

Psalm 18:35-36

³⁵ You have also given me the shield of Your salvation; 
Your right hand has held me up, 
Your gentleness has made me great. 
³⁶ You enlarged my path under me, 
So my feet did not slip.