"repentance toward God, and faith toward our Lord Jesus Christ."
Real Repentance and Real Faith are Inseparable
"For John came unto you in the way of righteousness, and ye believed him not: but the publicans and the harlots believed him: and ye, when ye had seen it, repented not afterward, that ye might believe him."
"And saying, The time is fulfilled, and the kingdom of God is at hand: repent ye, and believe the gospel."
"And that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem."
"Then said Paul, John verily baptized with the baptism of repentance, saying unto the people, that they should believe on him which should come after him, that is, on Christ Jesus."
"That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved. For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation. For the scripture saith, Whosoever believeth on him shall not be ashamed. For there is no difference between the Jew and the Greek: for the same Lord over all is rich unto all that call upon him. For whosoever shall call upon the name of the Lord shall be saved."
(Rom. 10:9-13 - confession implies repentance)
"Whosoever therefore shall confess me before men, him will I confess also before my Father which is in heaven. But whosoever shall deny me before men, him will I also deny before my Father which is in heaven. Think not that I am come to send peace on earth: I came not to send peace, but a sword. For I am come to set a man at variance against his father, and the daughter against her mother, and the daughter in law against her mother in law. And a manís foes shall be they of his own household. He that loveth father or mother more than me is not worthy of me: and he that loveth son or daughter more than me is not worthy of me. And he that taketh not his cross, and followeth after me, is not worthy of me. He that findeth his life shall lose it: and he that loseth his life for my sake shall find it."
It is the will of God: "The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance." (2Pet. 3:9)
It is a command of God: "And the times of this ignorance God winked at; but now commandeth all men every where to repent:" (Ac. 17:30)
It is the call of the Lord Jesus Christ: "I came not to call the righteous, but sinners to repentance." (Lk. 5:32) "When Jesus heard it, he saith unto them, They that are whole have no need of the physician, but they that are sick: I came not to call the righteous, but sinners to repentance." (Mk. 2:17)
It is an absolute necessity: "I tell you, Nay: but, except ye repent, ye shall all likewise perish." (Lk. 13:3, 5) Read Acts 8:5-24. Note, Simon the Sorcerer professes to be saved and is baptized but it turns out that he is just enamoured with the power of God and wants it for his own personal gain so that he can lord himself over the people as he had done for years. No repentance.
Heaven rejoices over one sinner that repents: " I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance." (Lk. 15:7)
Given by God: "Him hath God exalted with his right hand to be a Prince and a Saviour, for to give repentance to Israel, and forgiveness of sins." (Ac. 5:31) "Then hath God also to the Gentiles granted repentance unto life." (Ac. 11:18)
Comes through godly sorrow: "For though I made you sorry with a letter, I do not repent, though I did repent: for I perceive that the same epistle hath made you sorry, though it were but for a season. Now I rejoice, not that ye were made sorry, but that ye sorrowed to repentance: for ye were made sorry after a godly manner, that ye might receive damage by us in nothing. For godly sorrow worketh repentance to salvation not to be repented of: but the sorrow of the world worketh death." (2Cor. 7:8-10)
Real repentance effects a person's actions: Read Luke 3:7-14. "The men of Nineveh shall rise in judgment with this generation, and shall condemn it: because they repented at the preaching of Jonas; and, behold, a greater than Jonas is here. ... But let man and beast be covered with sackcloth, and cry mightily unto God: yea, let them turn every one from his evil way, and from the violence that is in their hands." (Mat. 12:41, w. Jonah 3:8) "He answered and said, I will not: but afterward he repented, and went." (Mat. 21:29)
Without, impossible to please God: "But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him." (Heb. 11:6)
It is a command: "And saying, The time is fulfilled, and the kingdom of God is at hand: repent ye, and believe the gospel." (Mk. 1:15) "Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent." ( Joh. 6:29)
Those who do not believe are condemned: "He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God. ... He that believeth on the Son hath everlasting life: and he that believeth not the Son shall not see life; but the wrath of God abideth on him." (Joh. 3:18, 36)
It is trusting what God says: "For what saith the scripture? Abraham believed God, and it was counted unto him for righteousness." (Rom. 4:3) "For had ye believed Moses, ye would have believed me: for he wrote of me. But if ye believe not his writings, how shall ye believe my words?" (Joh 5:46-47)
It is doing what God says: "By faith Abraham, when he was called to go out into a place which he should after receive for an inheritance, obeyed; and he went out, not knowing whither he went." (Heb. 11:8) "But be ye doers of the word, and not hearers only, deceiving your own selves." (Jam. 1:22)
Jesus is the proper object of faith: "That your faith should not stand in the wisdom of men, but in the power of God." (1Cor. 2:5) "Wherefore he is able also to save them to the uttermost that come unto God by him, seeing he ever liveth to make intercession for them." (Heb. 7:25) "All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast out." (Joh. 6:37) "Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool." (Isa. 1:18) "Come unto me, all ye that labour and are heavy laden, and I will give you rest." (Mat. 11:28) Jesus saves sinners: "But the other answering rebuked him, saying, Dost not thou fear God, seeing thou art in the same condemnation? And we indeed justly; for we receive the due reward of our deeds: but this man hath done nothing amiss. And he said unto Jesus, Lord, remember me when thou comest into thy kingdom. And Jesus said unto him, Verily I say unto thee, To day shalt thou be with me in paradise." (Lk. 23:40-43)
God gives salvation upon faith in Christ Jesus and His redemptive work: "Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God." (Rom. 3:25) "That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved. For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation. For the scripture saith, Whosoever believeth on him shall not be ashamed." (Rom. 10:9-11) "For by grace are ye saved through faith; and that not of yourselves: it is the gift of God." (Eph. 2:8) "For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek." (Rom. 1:16)
Faith comes by the Word of God: "But what saith it? The word is nigh thee, even in thy mouth, and in thy heart: that is, the word of faith, which we preach;" (Rom. 10:8) "So then faith cometh by hearing, and hearing by the word of God." (Rom. 10:17) "Being born again, not of corruptible seed, but of incorruptible, by the word of God, which liveth and abideth for ever." (1Pet. 1:23)