Jeremiah 2:2-3

2“Go and proclaim in the ears of Jerusalem, saying, ‘Thus says the Lord, “I remember [earnestly] the lovingkindness and devotion of your youth, Your time of betrothal [like that of a bride during the early years in Egypt and again at Sinai], When you followed Me in the wilderness, Through a land not sown.

3Israel was holy [something set apart from ordinary purposes, consecrated] to the Lord, The first fruits of His harvest [in which no outsider was allowed to share]. All who ate of it [injuring Israel] became guilty; Evil came on them,” says the Lord.’ ”