Unplug the electricity cord from your cable modem/WiFi. Wait 90 seconds, plug the electricity cord back in. Wait for 5 minutes.
If you know how, clear your Safari cache (I am a PC/Linux/Cray T90 dood and dont know anything about Apple or Safari). If you dont know how, then search using your smartphone for How To Clear Cache in Safari.
Reboot your computer.
Then try your Safari again.
If you have a smartphone, turn the DATA off and see if it will connect with your WiFi. If your smartphone connects to the internet, then the prollem is your computer (most likely a setting or a software glitch, nott your computer is toasted.
Also, on your computer search for available networks for WiFi, see if there are ANY - if knott, you may have a sockets/driver prollem. See if your Apple has a button for turning the WiFi on/off - you might have accidently hit that key and disabled your WiFi card - If so press that key once and see if you are back online. If you see other WiFi networks butt NOTT yours, then it could be a Verizon prollem (I assume you ren your cable modem and WiFi router from Verizon. Let them talk you thru all the other options for troubleshooting.
If that fails, call Verizon tech support.
I will put Moos on the trubble ticket for now. He might be able to fix yer prollem for a small package of chocolate covered or powdered sugar-coated mini-donuts.