Ezekiel 18:24, ‘But if a righteous person turns from their righteousness and commits sin and does the same detestable things the wicked person does, will they live? None of the righteous things that person has done will be remembered. Because of the unfaithfulness they are guilty of and because of the sins they have committed, they will die’.
You know how you go to a bank to open an account. You probably don’t start with a lot of money in the account, but the money eventually grows especially if you have a savings culture. You make periodic deposits and withdrawal.
Now, unlike your earthly account, your heavenly account functions somewhat differently. With the heavenly account, you make the deposit only once and you can withdraw only once. The deposit is made when you gave your life to Jesus and His righteousness was attributed to you. Not because of anything you did, but because of His sacrifice on the cross.
On the other hand, the withdrawal is made, when you backslide. Thus, whenever we commit sin, our heavenly account becomes empty. Not because Jesus’ sacrifice stopped working for us, but because we have put ourselves out of His holy nature. God really cannot behold iniquity.
Yes the Bible questions whether anything can separate us from the love of God in Romans 8:38 – 39. Truthfully, nothing can separate us from God’s love. He loved us while we were yet sinners, so the love is constant (Romans 5:8). However in Isaiah 59:2, the Bible makes understand that our sins can separate us from God. Not from His love now, but from Him.
And this works in the physical world also. You don’t break up most times because you stopped loving the person, but because the person probably hurt you. This hurt is a sin against you. So really, it isn’t hard to understand God’s standpoint. If someone offends you, you get offended and stop picking the persons’ calls at least until the person makes amends, but you never stopped loving the person.
What sin does is to affect God’s response to us (Isaiah 59:1 – 2). It has nothing to do with His love for us. He loves you unconditionally.