The Rangers never say die.

It may have looked as if their first-round playoff series against the Devils was over following a steady decline in the Rangers’ play, which had culminated in a no-show performance in the previous game, but the Blueshirts kept their season alive Saturday night with a decisive 5-2 win in Game 6 at Madison Square Garden.

The pushback from the Rangers that everyone has been waiting for finally came through.

The urgency that had been missing showed itself on the ice at key moments. The Rangers’ marquee players, and their power play, delivered when they needed it most.

Now, it comes down to Game 7 at The Rock on Monday night.

The Rangers made sure it will be a do-or-die game for both clubs.

“There was, I think, only one belief: We can do it,” said Vladimir Tarasenko, who benefited the most from head coach Gerard Gallant’s line and power-play changes by recording a goal and an assist. “Never give up. Just try to give our best and we’ll see what happens. It should be every night like this. The last few games wasn’t that good for us, I think we played well today, but we need to focus on the next one.”

Chris Kreider was sensational in the Rangers’ most pivotal game of the season, collecting a power-play goal and two primary assists.

His goal at the end of the first period to tie the score at 1-1 was the 16th of his career in potential elimination games, which tied Mark Messier for the most in NHL history.

The longest-tenured Ranger scored in three of the club’s six elimination games last season, as well, proving just how clutch Kreider has been for this team when their backs are against the wall.

After Kreider snapped the Rangers’ 0-for-14 streak on the power play to knot the score at one-all, Mika Zibanejad scored his first goal of the series just over 10 minutes into the second period for a 2-1 lead, the Rangers’ first advantage since the second period of Game 3.

The Garden came alive after that goal.

There hadn’t been much to cheer for in this building when the ice was down, but the Rangers had the fans on their feet.

Zibanejad said he would be lying if he said it didn’t feel good to just see the puck go in.

“The wins are all that matters,” the Rangers’ No. 1 center said. “We got the win we needed and wanted. Now we just keep going.”

The line changes simply made for better matchups against the Devils, who were stifled by Rangers goalie Igor Shesterkin and his 34 saves.

The Devils got off to another fast start, scoring the first goal of the game for the fourth time in this series.

The first period turned out to be their best 20 minutes of the game as the Rangers started to look more like the team that had started this series like a bat out of hell.

That much was evident in the way the Rangers received secondary scoring from fourth-liner Barclay Goodrow and defenseman Braden Schneider, whose goals in the third period ended Devils rookie netminder Akira Schmid’s night early. Vitek Vanecek, who was pulled after tough showings in the first two games, replaced Schmid in goal for the final 7:32 of regulation.

“Everybody has their role,” captain Jacob Trouba said. “Come this time, it’s everyone. Schneids scoring, we need those contributions. I think our fourth line played great, they chipped in with a goal going to the net. It’s a whole team effort.”

The Rangers salvaged their season for at least one more game.

They’ll have to do it all again Monday if they want to advance.

Persist. Persist. Persist.