知れば知るほど

I have another post talking about ほど, but here the usage is different.

Verbば + Verb + ほど The more… the more

Here is the sentence I encountered:

知れば知るほど胸が苦しくなる。
The more I know (about it/them), the more my heart aches.

Some more examples:

日本語は知れば知るほど面白いと思います。
I think the more I learn about Japanese, the more interesting it becomes.

食べれば食べるほど太る。
The more I eat, the more weight I gain.