Mat 5:7 Blessed are the merciful: for they shall obtain mercy.

This verse declares that if I live my life demonstrating mercy then I can expect receive it. This is one of the foundational teachings of Christ. The "Be Attitudes" they are called. And why are they called that? Because this is how we are to be. How can we be this? Because this is who we are. We are the representation of Christ's mercy on earth. Mercy is not something we do; something we put on and take off. Indeed, we are the embodiment of mercy.

2Co 4:5 For we preach not ourselves, but Christ Jesus the Lord; and ourselves your servants for Jesus' sake.
2Co 4:6 For God, who commanded the light to shine out of darkness, hath shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.
2Co 4:7 But we have this treasure in earthen vessels, that the excellency of the power may be of God, and not of us.

My prayer is that I, in every area of my life, be an earthen vessel that demonstrates the excellency of the Christ who died for me and lives in me. That I too may declare like Paul:

Gal 2:19 For I through the law am dead to the law, that I might live unto God.
Gal 2:20 I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me.
Gal 2:21 I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.