The phrase "this same day," often translated as "selfsame day," carries significant meaning in Scripture, rooted in the Hebrew word *esem*, typically meaning "bone." This term, used over 120 times, is translated as "same day" or "very same day" in about a dozen instances, indicating a special, enduring day that serves as a memorial of a prior event. In Exodus 12:17, 41, and 51, this "bone day" refers to the first day of Unleavened Bread, specifically the Night to be Much Remembered, marking God's deliverance of Israel from Egypt on Abib 15, the same calendar date as His covenant with Abram, reflecting His precise timing. The concept of a bone as the lasting remnant of something past underscores how these days testify to earlier divine acts. In Genesis 7, the first recorded "bone day" marks the day Noah and his family entered the ark, a momentous event of humanity's destruction and deliverance, looking back to God's proclamation 120 years prior in Genesis 6:3 that mankind would remain for 120 more years. This day, noted with exact month and day in verse 11, likely aligns with the same calendar date of God's earlier decree, serving as a memorial of His words and deeds. Genesis 17 highlights another "bone day," emphasized twice, signifying a critical moment in God's plan with Abram, possibly reflecting back to God's initial promise in Genesis 12:7 of land and descendants, confirmed on this day as a fulfillment of His faithfulness from decades before. Leviticus 23 mentions the Day of Atonement as "that same day" three times in verses 27-29, underscoring its importance as a holy day for affliction and rest, potentially looking back to a significant event like the golden calf incident on the 10th day of the 7th month, when the LORD relented from harming His people. Similarly, in Leviticus 23:21, the Feast of Weeks, or Pentecost, is called a "bone day," significant in itself but also reflecting back to Wavesheaf day for counting purposes, and possibly to the giving or sealing of the covenant at Mount Sinai, as a memorial of covenant activation. Wavesheaf day, also a "very same day," follows the pattern of reflecting on an earlier event, likely tied to Isaac's sowing and reaping in Genesis 26, the first recorded harvest by God's people in the promised land, emphasizing the core theme of harvesting one's own labor. This essence of individual reaping on Wavesheaf day contrasts with the rest required on a high day Sabbath, suggesting it should not coincide with the first day of Unleavened Bread. In Joshua 5:11, another "bone day" is noted, significant for the Israelites eating the produce of the land as the manna ceased, reflecting back on 40 years of God's providential provision of manna, which began on the 15th day of the second month and ended on the same calendar date 40 years later. This timing indicates the event occurred in the second month, aligning with the second Passover, further supported by logistical challenges of circumcision and recovery that likely delayed participation in the first month's Passover.