Not the commenter you asked, but my understanding of this situation is that in response to a Hamas attack on the 7th Israel has, for the past week and a half, been bombing a captive population that is currently without electricity, water, food and medical supplies, and our government is supporting that.
What Biden could do, now, is say “Hey, we understand your fear and pain, but Palestinian deaths won’t brings back those Israeli lives. Mass killing of civilians in the hopes of killing some of the people responsible won’t bring peace, trust me we’ve tried too.” From there he can engage in discussions about next steps, but this is the minimum fucking first step he refuses to take.