Here is the fruit of understanding. The person who truly grasps that Krishna is unborn, beginningless, and the great Lord of all worlds — that person becomes asammoodha. The word means free from delusion, clear-sighted. That clarity is the real mark of knowledge.
In the Gita's framework, sin is not just wrong action. Ignorance and delusion are the roots of all sin. When knowledge arrives, delusion breaks. And when delusion breaks, the bondage of karma loosens with it. That is why this shloka declares: such a person is freed from all sins.
Notice the sequence. First, knowledge. Then, freedom from delusion. Then, freedom from the consequences of past actions. Each step follows naturally from the one before.