To receive God’s mercy…  

If we look forward to receiving God’s mercy, we can never fail to do good so long as we have the strength. For if we share with the poor, out of love for God, whatever he has given to us, we shall receive according to his promise a hundredfold in eternal happiness. What a fine profit, what a blessed reward! With outstretched arms he begs us to turn toward him, to weep for our sins, and to become the servants of love, first for ourselves, then for our neighbors.
–Saint John of the Cross (1542-1591)

Suffer and endure…

Dear souls that seek to walk in security and comfort in spiritual things: If you knew just how necessary it is to suffer and to endure in order to reach such a lofty state of security and consolation… then you would in no way seek consolation, either from God or from creatures, but would rather bear the cross and, having embraced it, would desire to drink pure vinegar and gall, and would count this a great happiness.
–Saint John of the Cross (1542-1591)

Our own need for God…  

Out of this grows the love of our neighbors, for we now esteem them, and no longer judge them as we used to do, when we looked upon ourselves as exceedingly fervent, and upon others as not. Now we see nothing but our own need for God, which we keep so constantly before our eyes that we can look upon nothing else.
— Saint John of the Cross (1542-1591)