Definition and Overview:
True righteousness, as depicted in the Bible, is a state of moral purity and uprightness that aligns with God's standards. It is not merely an external adherence to laws or rituals but a profound internal transformation that reflects God's character. True righteousness is both a gift from God and a pursuit of holiness in the believer's life.

Biblical Foundation:
The concept of righteousness is deeply rooted in the Scriptures, where it is often associated with justice, holiness, and faithfulness. In the Old Testament, righteousness is frequently linked to God's covenantal relationship with His people. For instance, Genesis 15:6 states, "Abram believed the LORD, and it was credited to him as righteousness." This verse highlights the foundational principle that righteousness is credited through faith.

In the New Testament, the nature of true righteousness is further clarified through the teachings of Jesus and the apostles. Jesus emphasizes the internal aspect of righteousness in the Sermon on the Mount, saying, "Blessed are those who hunger and thirst for righteousness, for they will be filled" (Matthew 5:6). Here, righteousness is portrayed as a deep longing for God's will and presence.

Righteousness and the Law:
The relationship between righteousness and the Law is a central theme in the Bible. The Law, given through Moses, was intended to guide God's people in righteous living. However, the New Testament reveals that the Law alone cannot produce true righteousness. Romans 3:20 states, "Therefore no one will be justified in His sight by works of the law. For the law merely brings awareness of sin."

The apostle Paul further explains that true righteousness comes through faith in Jesus Christ. In Philippians 3:9, he writes, "And be found in Him, not having my own righteousness from the law, but that which is through faith in Christ—the righteousness from God on the basis of faith."

Righteousness and Faith:
Faith is the key to understanding true righteousness. Hebrews 11:6 declares, "And without faith it is impossible to please God, because anyone who approaches Him must believe that He exists and that He rewards those who earnestly seek Him." Faith is not merely intellectual assent but a trustful reliance on God and His promises.

The righteousness that comes by faith is exemplified in the life of Abraham, who is often called the father of faith. His belief in God's promises was counted as righteousness, setting a precedent for all believers. This righteousness is not earned but is a gift from God, as Ephesians 2:8-9 affirms: "For it is by grace you have been saved through faith, and this not from yourselves; it is the gift of God, not by works, so that no one can boast."

Righteousness and Sanctification:
True righteousness is closely linked to the process of sanctification, the ongoing work of the Holy Spirit in a believer's life. Sanctification involves growing in holiness and becoming more like Christ. Romans 6:19 encourages believers to "offer yourselves as slaves to righteousness leading to holiness."

The pursuit of righteousness involves both divine enablement and human responsibility. Believers are called to actively seek righteousness, as 1 Timothy 6:11 exhorts, "But you, O man of God, flee from these things and pursue righteousness, godliness, faith, love, perseverance, and gentleness."

Righteousness and the Kingdom of God:
The nature of true righteousness is also tied to the Kingdom of God. Jesus taught that righteousness is a defining characteristic of His Kingdom. In Matthew 6:33, He instructs, "But seek first the kingdom of God and His righteousness, and all these things will be added unto you."

This seeking of God's Kingdom and His righteousness involves prioritizing God's will and purposes above all else. It is a call to live under God's rule and to reflect His righteousness in every aspect of life.

Conclusion:
The nature of true righteousness is a profound and multifaceted concept in the Bible. It is a gift from God, received through faith in Jesus Christ, and is characterized by a life of holiness, justice, and love. True righteousness is not merely an external adherence to rules but an internal transformation that aligns the believer with God's character and purposes.