You seem confused. You say God loves some sinners sometimes and not others, but offer no evidence that is true or explanation for why that would be true.
Psalm 5:5 says..."The foolish shall not stand in thy sight: thou hatest
all workers of iniquity."
He loves all men, but the sinners alienate themselves from God and from His love.
You also say that if a Christian sins then that Christian will be condemned in the judgment but do not explain your reasoning, suggesting you believe only those who remain sinless until the end will be saved.
It is written in 1 Peter 4:17..."For the time is come that judgment must begin at the house of God: and if it first begin at us, what shall the end be of them that obey not the gospel of God?"
There is a day of judgment coming, and it behooves us to be in the book of life on that day.
Sinners have had their names erased from that book, as it is written in Rev 3:5..."He that overcometh, the same shall be clothed in white raiment; and I will not blot out his name
out of the book of life, but I will confess his name before my Father, and before his angels."
Nobody will remain sinless until the end like you erroneously think.
Me and Peter..."Forasmuch then as Christ hath suffered for us in the flesh, arm yourselves likewise with the same mind: for he that hath suffered in the flesh hath ceased from sin;" (1 Peter 4:1)
And Paul..."Awake to righteousness, and sin not; for some have not the knowledge of God: I speak this to your shame." (1 Cor 15:34)
And John..."We know that whosoever is born of God sinneth not; but he that is begotten of God keepeth himself, and that wicked one toucheth him not." (1 John 5:18)