Some people claim that repentance has no place in salvation, that you can believe in Jesus as “Savior” but never repent of your sin. That you can be saved even if you continue in chained to sin and iniquity just as it was before you became a Christian, that no change is needed. So what does Christ say:
Matthew 4:17 King James Version (KJV)
17 From that time Jesus began to preach, and to say, Repent: for the kingdom of heaven is at hand.
Mark 1:15
And saying, The time is fulfilled, and the kingdom of God is at hand: repent ye, and believe the gospel.
Matthew 9:13
But go ye and learn what that meaneth, I will have mercy, and not sacrifice: for I am not come to call the righteous, but sinners to repentance.
Mark 2:17
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.
Luke 5:32 King James Version (KJV)
32 I came not to call the righteous, but sinners to repentance.
Jesus even repeated it for emphasis in describing to the people:
Luke 13:1-6 King James Version (KJV)
1 There were present at that season some that told him of the Galilaeans, whose blood Pilate had mingled with their sacrifices.
2 And Jesus answering said unto them, Suppose ye that these Galilaeans were sinners above all the Galilaeans, because they suffered such things?
3 I tell you, Nay: but, except ye repent, ye shall all likewise perish.
4 Or those eighteen, upon whom the tower in Siloam fell, and slew them, think ye that they were sinners above all men that dwelt in Jerusalem?
5 I tell you, Nay: but, except ye repent, ye shall all likewise perish.
Jesus told his disciples to proclaim “repentance and remission of sins” in his name to all the nations (Luke 24:47).
When the apostles preached in Acts, they called people to repent of their sins in order to be forgiven:
Acts 2:38 King James Version (KJV)
38 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
Acts 3:19 King James Version (KJV)
19 Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord.
Acts 5:30-31 King James Version (KJV)
30 The God of our fathers raised up Jesus, whom ye slew and hanged on a tree.
31 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.
2 Corinthians 7:9-10 King James Version (KJV)
9 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.
10 For godly sorrow worketh repentance to salvation not to be repented of: but the sorrow of the world worketh death.
Paul also calls for repentance and makes it clear that those whose lives are characterized by sin will not "inherit the kingdom of God” :
1 Corinthians 6:9-10 King James Version (KJV)
9 Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
10 Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
Ephesians 5:5 King James Version (KJV)
5 For this ye know, that no whoremonger, nor unclean person, nor covetous man, who is an idolater, hath any inheritance in the kingdom of Christ and of God.
Scripture is clear, repentance is absolutely necessary in order to be saved. Only those truly repent and turn to Christ and His righteousness in their lives, and away from their sin, will be saved on the last day.