ROME — Three years ago, Pope Francis issued a sweeping letter that highlighted the global crisis posed by climate change and called for swift action to save the environment and the planet.

On Saturday, the pope gathered money managers and titans of the world’s biggest oil companies during a closed-door conference at the Vatican and asked them if they had gotten the message.

“There is no time to lose,” Francis told them on Saturday.

Pressure has been building on oil and gas companies to transition to less polluting forms of energy, with the threat of fossil-fuel divestment sometimes used as a stick.

The pope said oil and gas companies had made commendable progress and were “developing more careful approaches to the assessment of climate risk and adjusting their business practices accordingly.” But those actions were not enough.