1 John 1:7 But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin.

Revelation 1:5 And from Jesus Christ, who is the faithful witness, and the first begotten of the dead, and the prince of the kings of the earth. Unto him that loved us, and washed us from our sins in his own blood,

Jesus paid the price with His own blood. It is His blood, and only His blood, that washed us from our sins. You might ask, "Why the blood?"

Acts 20:28 Take heed therefore unto yourselves, and to all the flock, over the which the Holy Ghost hath made you overseers, to feed the church of God, which he hath purchased with his own blood,

Romans 3:25 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;

Leviticus 17:11 For the life of the flesh is in the blood: and I have given it to you upon the altar to make an atonement for your souls: for it is the blood that maketh an atonement for the soul.

Acts 15: 29 That ye abstain from meats offered to idols, and from blood, and from things strangled, and from fornication: from which if ye keep yourselves, ye shall do well. Fare ye well.

It is God's blood (Acts 20:28) and as mentioned in Leviticus 17:11, the life of the flesh is in the blood, which is also why in Acts 15:29, it tells us to abstain from blood.

2 Peter 2:1 BUT THERE were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies, even denying the Lord that bought them, and bring upon themselves swift destruction.

As mentioned in 2 Peter 2:1, the Lord bought us. You might question, "What did He bought us from?" You might also ask, "What is so special about sin?"

Romans 6:23 For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.

The wages of sin is death. This is why Jesus paid the price for us with his death, burial, resurrection and the shedding of His blood at the cross.

John 3:16-17 For God so loved the world, that he gave his begotten Son, that whosoever believeth in him should not perish, but have everlasting life. For God sent not his Son into the world to condemn the world, but that the world through him might be saved.

The most beautiful thing is that, Jesus did all the work. He lived a sinless life, died for us, for our sins, and we only need to put our faith on what Jesus did at the cross, at his finished work and we are saved. God made it so simple so that everyone could be saved, if they only have faith. And you might ask, "Is faith also work?"

Ephesians 2:8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:

God is the one who gives us the faith. Grace + Faith + Salvation, all belong to God. That's why it is the gift of God.

Ephesians 2:9 Not of works, lest any man should boast.

We are under Grace since we are still in the Church Age. No works, since Jesus did it all at the cross

John 19:30 When Jesus therefore had received the vinegar, he said, It is finished: and he bowed his head, and gave up the ghost.

Jesus said it is finished and so it is finished indeed.

You might ask, "Does that mean I don't lose salvation/eternal life?" If you believe solely on what Christ did alone at the cross to save you from hell, the answer is YES. You are saved.

Ephesians 4:30 And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption.

It clearly tells at Ephesians 4:30 that we can grieve the Holy Spirit, but we don't lose the Holy Spirit because we are sealed until redemption.

However this is only during the Church Age. During the Tribulation (the church would already be raptured out of this world), it isn't only faith, but faith and works (do not grieve the Holy Ghost). So believe and be saved while you are still able. Please.