Repent is closely related to Confess. And it involves more than just a different way to look at things:
The most common term in the Old Testament for repentance is sub; the verbal forms appear well over 1, 050 times, although translated "repent" only 13 times, and the substantive "repentance" occurs only once in the New International Version. More commonly the translation is "turn" or "return." A related term is naham, which is translated three times as "repent" in the New International Version. In the New Testament, the most common verb is metanoeo (33 times) and the noun metanoia (20 times). A synonym metamelomai is once translated "repent." (Matt. 21:32).
Two requisites of repentance included in sub are "to turn from evil, and to turn to the good." Most critical theologically is the idea of returning to God, or turning away from evil. If one turns away from God, apostasy is indicated. Three times Ezekiel included God's call to the people of Israel: "Repent! Turn from your idols and renounce all your detestable practices!" ( 14:6); "Repent! Turn away from all your offenses" ( 18:30 ); "Turn! Turn from your evil ways" ( 33:11).
Such a call was characteristic of the prophets (see, e.g., Isa. 45:22; 55:7 ; Joel 2:12-13 ). The Septuagint underlines this idea by usually translating sub by epic (apo-)strophe (to turn about, or to turn away from). To be abandoned are both evil intentions and evil deeds, and both motive and conduct are to be radically changed. A striking example is found in Isaiah 1:16-17: "Take your evil deeds out of my sight! Stop doing wrong, learn to do right! Seek justice, encourage the oppressed. Defend the cause of the fatherless, plead the case of the widow."
One may detect two sides to this turning/converting. There is the free sovereign act of God's mercy, and a conscious decision to turn to God (a turning that goes beyond sorrow and contrition).
Confession of sins is both commanded and frequently illustrated (e.g., in the penitential prayers, as Pss. 25 and 51). When one is guilty of various sins, "he must confess in what way he has sinned" in order to receive atonement and forgiveness ( Lev. 5:5; 26:40-42 ). Thus, confession belongs to repentance, and is needed for divine forgiveness (1 John 1:9 ). A great prophecy/ promise is given in the Book of Isaiah: "The Redeemer will come to Zion, to those in Jacob who repent of their sins" ( 59:20).
Its not a hocus-pocus word but it is an intentional word.