To The Defiled And Unbelieving Nothing Is Pure

So many people deny the possibility of purity today, yet in the Scripture we read...

Act 15:9  And put no difference between us and them, purifying their hearts by faith.

1Pe 1:22  Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that yelove one another with a pure heart fervently:

1Pe 1:23  Being born again, not of corruptible seed, but of incorruptible, by the word of God, which liveth and abideth for ever.

How pure is pure? Is purity actually defiled?

The New Covenant is inclusive of this...
Heb 10:16 This is the covenant that I will make with them after those days, saith the Lord, I will put my laws into their hearts, and in their minds will I write them; Inclusive of this... Rom 5:5 And hope maketh not ashamed; because the love of God is shed abroad in our hearts by the Holy Ghost which is given unto us. Inclusive of this... 1Jn 2:5 But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him. 1Jn 4:16 And we have known and believed the love that God hath to us. God is love; and he that dwelleth in love dwelleth in God, and God in him. 1Jn 4:17 Herein is our love made perfect, that we may have boldness in the day of judgment: because as he is, so are we in this world. Yet many people have somehow been convinced that none of us can truly love God? If the love of God shed abroad in our hearts is not pure then what actuslly is pure? Tit 1:15 Unto the pure all things are pure: but unto them that are defiled and unbelieving is nothing pure; but even their mind and conscience is defiled. Tit 1:16 They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate.