5:18Meaning
What is “good and proper” The speaker calls attention to an observed conclusion: it is fitting for a person to eat, drink, and experience enjoyment in the “good” that comes from labor “under the sun.” This is framed within a boundary: these are “all the days” of the life God has given. The reason given is simple and repeated in the section’s language: this enjoyment is a person’s “portion” (portion), meaning an allotted share rather than an unlimited achievement.
