'Appearing' in the Bible

After He had suffered, He also presented Himself alive to them by many convincing proofs, appearing to them during 40 days and speaking about the kingdom of God.

the sun shall be changed to darkness and the moon to blood, before the great and gloriously appearing day of the Lord come.

and neither sun nor stars appearing for more days, and not a little tempest lying upon us, thenceforth all hope was taken away of our being saved.