The Gunners have been in need of a win in recent weeks as their last three games, against Manchester United, Southampton and West Ham United, all ended with undesired results.
Luckily, Mesut Ozil's wonderful volley gifted Arsenal the three points - a much needed confidence-builder before the games against West Ham and Liverpool in the coming days.
Here is what we can draw from the game:
Arsenal need to improve
Despite playing some of the best football in recent years, the Gunners have managed to pick up only two points out of a possible nine in their last three games. They lost 1-3 at home to the Red Devils and drew with the Saints at the St.Mary Stadium and West Ham United at the London Stadium.
Against Newcastle, Arsenal were once again undoubtedly the better side but Rafael Benitez could have stolen points near the end.
This is an issue for Arsene Wenger and the technical staff. Arsenal desperately need someone to put materialise the advantages from midfield. They need someone to score more goals.
Relegation Threat for Newcastle
Newcastle have not tasted victory in seven games in a row now. Rafael Benitez' men are in the relegation zone alongside Swansea City and West Brom, and more worryingly nothing seems to be changing at the moment.
The likes of Crystal Palace have crawled their way out of the drop zone with the sensational form of Wilfred Zaha and the return of Christian Benteke, but the Baggies lack such inspiration at the moment.
Someone needs to act up very soon or they could start buying TV subscriptions to Premier League games as this is the only they will be seeing the matches in the top echelon next season. There is a desperate need for revival which could be achieved through the transfer window. Whether this will happen or not is an entirely different matter.
Mesut Ozil has hit top form
The German star is well on his way to silencing his critics. He has bagged nine assists and three goals in his last nine games. But it's not only that. His volley against Newcastle spoke of magic which we have not seen from him recently.
This has exonerated Arsenal stars Alexis Sanchez, Laurent Koscielny and Alexandre Lacazette, who would have received cricism should the Gunners failed to win.
Mesut fired the home side into the lead following pressure from Jack Wilshere and Sanchez to create chaos inside the box.
The quality of the volley by Ozil was such that it reminded of the iconic one Zinedine Zidane took against Bayer Leverkusen in the Champions League final in 2002.