This has thousands of reviews but i thought i'd give mine. sort of an explanation to the series. dont worry, no spoilers
The first thing to note is this show is based on the DC comics version of Lucifer but the fun part is, it has a balanced way of also relating to the religiously known type of lucifer.
The show has everything and more. The Lucifer character is charming, witty, and relatable. Relating to this 'Lucifer' character should not make you seem like you're commiting some out landish sin, because the reason he's relatable is because despite him being well Lucifer, he seems every bit human too but with a well balanced blend of both. You relate to his humanity and laugh at his wittiness.
The actor, Tom Ellis brings the character to life in the very best way possible and the only other show that has done this is Travelers as far as i'm concerned.