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a-per'-ing (apokalupsis, "an unveiling"; epiphaneia, "a manifestation"):
Exclusively technical, referring in the six passages where found to the return, the millennial advent of Christ (e.g. 1 Peter 1:7, the King James Version;
2 Timothy 1:10; Titus 2:13).
Orr, James, M.A., D.D. General Editor. "Entry for 'APPEARING'". "International Standard Bible Encyclopedia". 1915.