Therefore, since through God's mercy we have this ministry, we do not lose heart.
NIV
THEREFORE, SINCE we do hold and engage in this ministry by the mercy of God [granting us favor, benefits, opportunities, and especially salvation], we do not get discouraged (spiritless and despondent with fear) or become faint with weariness and exhaustion.
AMP
Therefore seeing we have this ministry, as we have received mercy, we faint not;
KJV
I ask you, therefore, not to be discouraged because of my sufferings for you, which are your glory.
NIV
So I ask you not to lose heart [not to faint or become despondent through fear] at what I am suffering in your behalf. [Rather glory in it] for it is an honor to you.
AMP
Wherefore I desire that ye faint not at my tribulations for you, which is your glory.
KJV