We read in, Romans 12:1;
“Therefore I urge you, brethren, by the Mercies of God, to present your bodies a living and holy sacrifice, acceptable to God, which is your spiritual service of worship.”
By the Mercies of God: διὰ τῶν οἰκτιρμῶν τοῦ θεοῦ (dia ton oiktirmon tou Theou)
The word “mercies”(οἰκτιρμός oikorimos: deep feeling about someone's difficulty or misfortune ) here denotes favor shown to the undeserving, or kindness, compassion. The plural is used in imitation of the Hebrew word for mercy, רָחַם racham, which has no singular.
Mercy is God's nature as it confronts human suffering and guilt. It is human misery and sin that reveal God's mercy. If it wasn't for human suffering God's mercy might have remained hidden in His heart, unknown to other intelligences. God would still be merciful even if there were no guilt, no pain, no tears, and no suffering. Because He is merciful the Almighty is naturally disposed to be kind to those who are in misery or distress, no matter how undeserving they may be.
The tendency of His nature is to relieve the suffering caused by man's sin, which has caused us to be in a pathetic, pitiful situation. Because His nature is one of mercy, the God of the Bible feels our sorrows, sympathizes with our pains, and has pity for the terrible circumstances we find ourselves in.
He is completely free from any cruelty or meanness toward us. Because He is merciful, God forgives us when we repent, although we don't deserve it, and withholds the punishment that we merit. God is therefore by His nature disposed to forgive man's rebelliousness.
God's mercy is not a temporary mood that can change, but an attribute of God's eternal being. Since it comes from within His eternal nature, God's mercy is infinite and inexhaustible. God's mercy never began to be - it always was. It will never cease to be. It can never be more since it is infinite. It can never be less because the infinite cannot suffer lessening. Nothing that has occurred or will occur in heaven, on earth, or in sheol can ever change the tender mercies of our God. His mercy will always exist, boundless, overwhelming, an immensity of divine pity and tenderest compassion.
Partly quoted from http://www.shema.com/articles/articles-009.php
Lord Jesus, thank You for giving us Your Mercy that we don’t deserve and we can shout for joy;
Once we were not a people, but now we are the people of God; once we had not received mercy, but now we have received God’s mercy because of Your sacrificial Death on the Cross and Resurrection from the dead! (1 Peter 2:10)
Praise Jesus all the earth!