This is where you can purposely post a FAQ
(Daily, 2x a week or weekly).
You are the one doing that on your facebook wall. It is as simple as the above image:
FAQ of the Day
Question title
Link to answer
If you want to...
You can tag people and put a note in the lower comment area: "Tagged: This topic was discussed with a some people lately and the link has some useful info, if you are open to it, check it out."
Or you can not tag anyone and just put that in the comments, as a general note so they dont think you are targeting them.
If you are prayerfully targeting them but are being helpful to post that to help them, You can say to your spouse, Christian evangelism buddy, or mom "I was talking with someone today about xyz topic and ask for a quick prayer that theyll be open to the faq i post about it today on social media".
Resources for posting FAQ can be gleaned from or found at reputable places. There are several places noted here in the Resources page.