The game featured five lead changes and was tied six times before the Lakers finished off the Nuggets in the 114-93 triumph at Staples Center in Los Angeles.
"We all just try to do our part," James told reporters in a postgame Zoom video conference. "There are five guys on a string and we all try to work together.
"When we do that, we are very, very good."
Denver jumped out to a 30-27 lead in the first quarter. The Nuggets then outscored the Lakers 28-19 in the second quarter to earn a 58-46 lead at halftime.
The Lakers put together a few short runs to start the third quarter. They then ended the frame on a 15-0 run to take an 83-75 lead into the fourth quarter. Los Angeles outscored Denver 31-18 over the final 12 minutes to secure the win.
Jamal Murray led the Nuggets with 20 points. Nuggets center Nikola Jokic had 13 points, 10 rebounds and six assists. Monte Morris had 16 points in the loss.
"When we put our minds to it, we can do great things," Lakers coach Frank Vogel said.