94 ls 400lexus ran out of gas how to get it runnin again on 1994 Lexus LS400

i brought a 94 lexus 400 and it been park for 5yrs and the owner ran it out of gas need i cant get it started i put 7gals of gas in it steal wont started what should i do.

Asked by for the 1994 Lexus LS400
Make sure fule pump has power if so ,,,,,, change fule pump and filter