The first fruits in the Bible refer to the first portion of a harvest that is dedicated to God as an offering. This practice is mentioned in several books of the Bible, including Exodus, Leviticus, and Deuteronomy. The Israelites were instructed to bring the first fruits of their harvest to the temple as a way of acknowledging God's provision and expressing gratitude. This offering was considered holy and was to be given before the rest of the harvest was consumed or used for other purposes.