|Noah Webster's Dictionary|
1. (n.) Departure, especially departure from this life; death.
2. (v. i.) To depart from this life; to die; to pass away.
Int. Standard Bible Encyclopedia
DECEASE, IN NEW TESTAMENT
de-ses' (teleutao, "to come to an end," "married and deceased" (Matthew 22:25)): With thanato, "death," "die the death" (Matthew 15:4 Mark 7:10, the Revised Version, margin "surely die"). Elsewhere the word is translated "die" (Matthew 2:19; Matthew 9:18 Mark 9:48 and often; Hebrews 11:22, the Revised Version (British and American) "end was nigh").
Also the substantive, exodos, "exodus," "exit," "departure," "his decease which he was about to accomplish" (Luke 9:31, the Revised Version, margin "departure"); "after my decease" (2 Peter 1:15, the Revised Version, margin "departure").
DECEASE, IN THE OLD TESTAMENT AND APOCYPHRA
de-ses' (rapha', plural repha'im, "ghosts," "shades," is translated by "dead," "dead body," and "deceased" in both the King James Version and the Revised Version (British and American)): The word seems to mean "soft," "inert," but its etymology is uncertain (see REPHAIM). The various writers of the Old Testament present, as is to be expected on such a subject, different conceptions of the condition of the deceased. In the beginning probably a vague idea of the continuation of existence was held, without the activities (Isaiah 59:10) and the joys of the present life (Psalm 49:17). They dwell in the "land of forgetfulness" (Job 14:21 Psalm 88:5; compare Isaiah 26:14), they "tremble" of cold (Job 26:5), they totter and "stumble at noonday as in the twilight" (Isaiah 59:10), their voice is described as low and muttering or chirping (Isaiah 8:19; Isaiah 29:4), which may refer to the peculiar pitch of the voice of the spirit medium when a spirit speaks through him. (The calling up of the dead, which was strictly forbidden to Israel (Leviticus 19:31; Leviticus 20:27) is referred to in 1 Samuel 28:13 and perhaps in Isaiah 14:9.) The deceased are separated from their friends; love and hatred have both ceased with them (Ecclesiastes 9:5, 6); "There is no work, nor device, nor knowledge, nor wisdom, in Sheol" (Ecclesiastes 9:10). The deceased are unable to praise Yahweh (Psalm 6:5; Psalm 88:10-12 Isaiah 38:18; Baruch 2:17; Sirach 17:27, 28). Nor does there seem to have been at first an anticipation of reward or punishment after death (Psalm 88:10; Sirach 41:4), probably because the shades were supposed to be lacking the organs by which either reward or punishment could be perceived; nevertheless they are still in the realm of God's power (1 Samuel 2:6 Psalm 86:13; Psalm 139:8 Proverbs 15:11 Isaiah 7:11 Hosea 13:14 Amos 9:2; Tobit 13:2).
Gradually the possibility of a return of the departed was conceived (Genesis 5:24 2 Kings 13:21 Psalm 49:15; Psalm 73:24; Psalm 86:13 Hosea 13:14; The Wisdom of Solomon 3:1-7; 4:13, 14; 6:18, 19; 10:14). Even here it is often more the idea of the immortality of the soul than that of the resurrection of the body, and some of these passages may be interpreted as allegorical expressions for a temporal rescue from great disaster (e.g. 1 Samuel 2:6); nevertheless this interpretation presupposes the existence of a deliverance from the shadows of Sheol to a better life in the presence of Yahweh. Some passages refer clearly to such an escape at the end of the age (Daniel 12:2 Isaiah 26:19). Only very few of the Old Testament believers reached the sublime faith of Job (19:25, 26) and none the blessed expectation taught in the New Testament, for none but Christ has "brought life and immortality to light" (2 Timothy 1:10 John 5:28, 29).
The opinion that the dead or at least the newly buried could partake of the food which was placed in graves, a custom which recent excavations have clearly shown to have been almost universal in Palestine, and which is referred to in Deuteronomy 26:14 and Tobit 4:17, was soon doubted (Sirach 30:18), and food and drink prepared for the funeral was henceforth intended as the "bread of comfort" and the "cup of consolation" for the mourners (Jeremiah 16:7 2 Samuel 3:35 Ezekiel 24:17). Similarly the offering and burning of incense, originally an homage to the deceased, became a relief for the mourner (2 Chronicles 16:14; 2 Chronicles 21:19 Jeremiah 34:5). See also The Wisdom of Solomon 3:2; 7:06; Sirach 38:23, and articles on CORPSE; DEATH; HADES; SHEOL.
H. L. E. Luering
Decease (2 Occurrences)
Luke 9:31 Who appeared in glory, and spake of his decease which he should accomplish at Jerusalem. (KJV ASV WBS)
2 Peter 1:15 Moreover I will endeavour that ye may be able after my decease to have these things always in remembrance. (KJV ASV WBS)