The noun euphoria is not found in the Greek NT, but the related verb euphoreo is found in Luke 12.16, where the land of a rich man 'produced abundantly' (NRSV) 'bore good crops' (TEV), 'his estate had done well' (King). This is the parable where Jesus warned about greed - that life does not consist of having 'enough and to spare' - and told that all the rich man's excitement about his prosperity ended in his sudden and unexpected death.
The Greek word euphoris (borne well, healthy) has led to the word in English, euphoria - a feeling of intense happiness. The Greeks used the word euphoria to express an immense sense of well being. The true euphoria is seen in a puppy which rolls over on the ground for the very joy of being alive; in the lambs gambolling in the fields, in a colt galloping along beside its mother; and in children who skip, dance and run because they cannot keep still. This is the true euphoria; and, we believe should be the portion of those filled with all the fulness of God. Old age comes on far too speedily. The radiant morn of life is the continuous possession of those who are Spirit-filled.
Beneath us is a fair meadow, through which the pure River of the Water of Life is winding its way; on either side of it stand the Trees of Life, with twelve manner of fruits and beautiful leaves for the healing of the nations. In the distance, high on the summit of the everlasting hills, the city of God, bathed in light and glory—the New Jerusalem, the city that needs no sun, no moon, "for the glory of God doth lighten it, and the Lamb is the light thereof."