For the death that He died, He died to sin once for all time; but the life that He lives, He lives to God. Romans 6:10
For Christ also suffered for sins once for all time, the just for the unjust, so that He might bring us to God, having been put to death in the flesh, but made alive in the spirit; I Peter 3:18
“By this will we have been sanctified through the offering of the body of Jesus Christ once for all. Every priest stands daily ministering and offering time after time the same sacrifices, which can never take away sins; but He, having offered one sacrifice for sins for all time, sat down at the right hand of God, waiting from that time onward until His enemies be made a footstool for His feet. For by one offering He has perfected for all time those who are sanctified. Hebrews 10:10-14
25nor was it that He would offer Himself often, as the high priest enters the holy place year by year with blood that is not his own. Otherwise, He would have needed to suffer often since the foundation of the world; but now once at the consummation of the ages He has been manifested to put away sin by the sacrifice of Himself. Hebrews 9:25-26
You’re quoting scripture that pertains to Earth. For all you really know, He has come time and again, all over the Universe, in forms and speaking in ways that are tailored to the people of that place and time. As far as I’m aware, the Bible doesn’t really speak to other planets.
As another poster wrote, I don’t put any limits on God or His intentions and plans for the Universe that He created.