The Lord owns everything. We occupy His earth, breath His air, eat the fruit of His ground.
Those who understand this are likely believers in Christ Jesus or potential believers. Those who don`t are deceived by Satan into believing everything just happened. Such people are in gross darkness.
Can atheists be saved? Yes, because the Gospel is the power of the Lord unto salvation
Rom 1:16 Rom 10:17 Heb 11:6 Mar 16:15