God requires Holiness from all Christians since you are his sons and daughters and God is Holy.
1 Peter 1:15 But as he which hath called you is holy, so be ye holy in all manner of conversation;
1 Peter 1:16 Because it is written, Be ye holy; for I am holy.
God is Holy and the Cherubs fly in the throne room saying Holy, Holy, Holy, Lord God Almighty.
Revelations 4:8 And the four beasts had each of them six wings about him; and they were full of eyes within: and they rest not day and night, saying, Holy, holy, holy, Lord God Almighty, which was, and is, and is to come.
Isaiah 6:3 And one cried unto another, and said, Holy, holy, holy, is the Lord of hosts: the whole earth is full of his glory.
We are to cleanse ourselves from all filthiness of the flesh.
2 Corinthians 7:1 Having therefore these promises, dearly beloved, let us cleanse ourselves from all filthiness of the flesh and spirit, perfecting holiness in the fear of God.
You will not see the lord if your not Holy.
Hebrews 12:4 Follow peace with all men, and holiness, without which no man shall see the Lord:
Philippians 2:1 Holding forth the word of life.
Philippians 2:14 Do all things without murmurings and disputings:
Philippians 2:15 That ye may be blameless and harmless, the sons of God, without rebuke, in the midst of a crooked and perverse nation, among whom ye shine as lights in the world;
Are bodies are to be a living sacrifice Holy unto God which is our reasonable service.
Romans 12:1 I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.
Romans 6:22 But now being made free from sin, and become servants to God, ye have your fruit unto holiness, and the end everlasting life.
Matthew 5:48 Be ye therefore perfect, even as your Father which is in heaven is perfect.
1 Corinthians 3:16 Know ye not that ye are the temple of God, and that the Spirit of God dwelleth in you?
1 Corinthians 3:17 If any man defile the temple of God, him shall God destroy; for the temple of God is holy, which temple ye are.
1 Peter 2:9 But ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvelous light;
1 Corinthians 6:19 What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own?
1 Corinthians 6:20 For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God’s.
2 Peter 3:11 Seeing then that all these things shall be dissolved, what manner of persons ought ye to be in all holy conversation and godliness,
2 Peter 3:12 Looking for and hasting unto the coming of the day of God, wherein the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?
2 Peter 3:13 Nevertheless we, according to his promise, look for new heavens and a new earth, wherein dwelleth righteousness.