Behind the English translation “mercy” lie diverse biblical words in Hebrew (khesed, khanan, rakham) and in Greek (charis, eleos, oiktirmos, splanchnon). These words are also translated as “love,” “compassion,” “grace,” “favor,” “kindness,” “loving-kindness,” and so on, depending on context. Hence, a conceptual approach to the meaning of “mercy” is best.

God’s Mercy

Mercy as part of God’s character. Mercy is a distinguishing characteristic of the nature of God. God is called “the Father of mercies” (2 Cor. 1:3 NRSV [NIV: “Father of compassion”]). God is “rich in mercy” (Eph. 2:4; cf. 2 Sam. 24:14; Dan. 9:9). God’s mercy was demonstrated in his covenantal faithfulness to his people (1 Kings 8:23–24; Mic. 7:18–20). God redeemed the oppressed Israelites from slavery under Pharaoh because of his mercy, which was stirred when he heard their groaning and cry for help. Here, the rekindling of God’s mercy toward the Israelites was depicted in terms of remembering his covenant with Abraham, Isaac, and Jacob (Exod. 2:23–25). Mercy is a manifestation of God’s faithfulness to his covenant. Hence, God’s mercy to his covenant people never ceases (Pss. 119:132; 103:17).

God has absolute sovereignty in electing the people to whom he wills to show mercy. A classic expression appears in Exod. 33:19: “I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion.” Paul quoted this to explain God’s sovereignty in electing Jacob as the recipient of God’s mercy (Rom. 9:13–15). God’s mercy cannot be acquired by human effort or desire (Rom. 9:16). God even ordered the Israelites to show no mercy to the Canaanites because of their corruption and idolatry (Deut. 7:2).

Diverse images are used to describe God’s mercy. God is compared to a loving father who has compassion on his children (Jer. 31:20; Mal. 3:17). “As a father has compassion on his children, so the Lord has compassion on those who fear him; for he knows how we are formed, he remembers that we are dust” (Ps. 103:13–14). God’s compassion is also compared to that of a nursing mother who feeds her baby at her breast (Isa. 49:15). The images of the loving father and the loving mother reflect closely the heart of God’s mercy toward his chosen people. God is especially merciful to the needy, the weak, the afflicted, and the oppressed (Exod. 2:23–24; Ps. 123:2–3; Isa. 49:13; Heb. 4:16). God is called “a father to the fatherless” and “a defender of widows” (Ps. 68:5). Sinners appeal for God’s mercy when they request forgiveness (Ps. 51:1). “Have mercy on me” is a common form of expression when the psalmist entreats God for his forgiveness (Pss. 41:4, 10; 51:1). God’s mercy is also shown in his act of salvation and blessing (Exod. 15:13; Deut. 13:17–18; Judg. 2:18; Eph. 2:4–5).

God’s mercy in redemptive history. Redemptive history is a successive demonstration of God’s mercy toward his chosen people. It was because of God’s mercy that he took the initiative to save fallen human beings (Gen. 3:15). Death was the due penalty for Adam and Eve (Gen. 2:17), but God preached the good news of mercy that the descendant of the woman would someday crush the head of the serpent. In Rev. 20:2 that ancient serpent in the garden of Eden is identified as “the devil, or Satan,” whose head was crushed by Jesus Christ on the cross and is bound by the coming Messiah “for a thousand years” and will be “thrown into the lake of burning sulfur” (Rev. 20:2, 10). In spite of God’s judgment on Cain, the first murderer, God showed mercy by putting a mark on him so that no one would kill him (Gen. 4:15). As the psalmist later confesses, God proves himself as the merciful God who “does not treat us as our sins deserve or repay us according to our iniquities” (Ps. 103:10).

Noah and his family were saved from the judgment of the flood because of God’s special mercy toward them (Gen. 6:8). Immediately after God confused the languages of human beings because of their challenge to him (Gen. 11:1–9), God showed mercy on Abram, “a wandering Aramean” (Deut. 26:5), and designated him to be the father of his chosen people (Gen. 12:1–3). Jacob’s election originated solely from God’s mercy, as Paul pointed out by quoting Scripture: “Jacob I loved, but Esau I hated” (Rom. 9:13). The exodus is also the clearest evidence of God’s demonstration of mercy toward his chosen people (Exod. 2:23–25). They were saved not by their own righteousness but rather by God’s mercy on the covenant people, who suffered under the bondage of Pharaoh’s slavery. God’s mercy reached its climax when he sent his only Son, Jesus Christ, to save sinners (Rom. 5:8). It is because of God’s mercy that we are saved, not because of our righteousness (Titus 3:5).

Christ’s Mercy

Jesus Christ lived a life full of mercy. He is, in a sense, the bodily manifestation of God’s mercy. Jesus expressed deep mercy whenever he saw the sick and the lost. The writers of the Gospels describe Jesus’ demonstrations of mercy when he healed the blind, the lame, the deaf, the leprous, the demon-possessed, and the dead (Matt. 9:36; 14:14; 20:34; Mark 1:41; 5:19; 6:34; 8:2; Luke 7:13; John 11:33). Jesus especially had compassion on the crowds, who did not have a spiritual leader, and he compared them to “sheep without a shepherd” (Matt. 9:36).

Jesus’ ministry of healing and evangelism was motivated by his deep mercy and compassion toward people in physical and spiritual need (Luke 4:16–21; cf. Isa. 61:1–2). Whenever the sick appealed to his mercy, Jesus never refused to dispense it to them (Matt. 15:22; 17:14–18). For example, he healed the two blind men who entreated his mercy (Matt. 20:30–34). When a leper, kneeling before him, entreated his mercy, Jesus touched him (risking his own uncleanness according to the law) and healed him (Matt. 8:2–3). When a centurion asked for Jesus’ mercy on his sick servant, he was willing to go and heal the sick man (Matt. 8:5–13). Jesus’ mercy was aroused especially when he saw people crying for the dead, and even he shed tears (John 11:33–35). When Jesus saw a widow crying for her dead son during a funeral procession, he comforted and had compassion on her and made her son alive (Luke 7:12–15).

According to Heb. 2:17–18, Jesus became “a merciful and faithful high priest” to make atonement for the sins of his people. He is also compared to the high priest who is able to sympathize with our weaknesses because he “has been tempted in every way, just as we are” (Heb. 4:15). His high priestly work on earth was highlighted in terms of his ministry of mercy toward his people. Like God’s mercy, Jesus’ mercy was shown in his actions of salvation (Luke 19:10; Eph. 5:2; 1 Tim. 1:14–16; Titus 3:4–7), of blessing (Mark 10:13–16), and of forgiveness (Mark 2:10; Luke 23:34). Paul’s personal experience led him to confess, “He saved us, not because of righteous things we had done, but because of his mercy” (Titus 3:5). Jesus’ character of mercy was most vividly manifested on the cross when he prayed for the forgiveness of the crucifying soldiers and the cursing crowds (Luke 23:33–37).

Human Response to God’s Mercy

What is the proper response to God’s mercy and compassion? God expects believers to show the same kind of mercy toward other people. One of the best examples is the parable of the unmerciful servant (Matt. 18:23–35). The central focus of this parable is on the unmerciful servant, to whom a tremendous mercy is shown by the king, but who refuses to show a little mercy to his fellow servant. The parable concludes with the king’s statement that no mercy will be shown to those who do not show mercy and forgiveness to others. Hence, a forgiving attitude is a must for believers, who have received immeasurable mercy from God when he forgave their sins at the time of repentance. The Lord’s Prayer also includes the believer’s forgiveness of others as being inseparably linked to the request for forgiveness from God (Matt. 6:12). Jesus affirms this idea in a subsequent statement: “For if you forgive other people when they sin against you, your heavenly Father will also forgive you. But if you do not forgive others their sins, your Father will not forgive your sins” (6:14–15).

Mercy is one of the eight blessings in the Beatitudes: “Blessed are the merciful, for they will be shown mercy” (Matt. 5:7). Jesus’ response to the critical Pharisees reveals that our merciful life should precede our religious life (9:13). According to the parable of the good Samaritan (Luke 10:25–37), the true neighbor is the one who shows mercy to the afflicted. Its conclusion, “Go and do likewise” (10:37), requires believers to show mercy to their suffering neighbors. At the last judgment the righteous are characterized by their lives of showing mercy to the hungry, the thirsty, the stranger, the unclothed, the sick, and the imprisoned (Matt. 25:37–40). In Luke 6:36, Jesus summarizes the law of mercy: “Be merciful, just as your Father is merciful.” According to James, “judgment without mercy will be shown to anyone who has not been merciful”; however, “mercy triumphs over judgment” (James 2:12–13). And according to the prophets, a merciless life is characteristic of godless people (Isa. 13:18; Jer. 6:23; 21:7; 50:42; Amos 1:11–12).

It is by God’s mercy that believers can persevere during the time of suffering (2 Cor. 4:1). Their prayer is the channel through which they draw God’s mercy. Hence, the writer of Hebrews exhorts believers to “approach God’s throne of grace with confidence, so that we may receive mercy” (Heb. 4:16).