Leviticus 24:8

Every sabbath. The shewbread was removed weekly upon the Sabbath day by four priests, according to the Talmud, two to take out the loaves and two to take out the incense cups. As they were ready to remove the loaves and the incense cups, four other priests, of the new course for the coming week, entered, carrying the new bread and the new incense cups. Those who brought in the new bread stood at the north side, facing south; those who took away the old bread stood at the south side, facing north. As the priest on one side removed the loaves, the priest opposite him put the new on. In doing this they were careful not to take away the old till the new was ready to be put in place. Thus, bread was always on the table. The old bread was then eaten by the priests as their portion, within the sacred precincts of the sanctuary. It was this bread that Abimelech gave to David and his men (1 Sam. 21:4-6; Matt. 12:3, 4).

This is often called the “bread of the Presence,” and typified Christ, the true Bread of Life (see John 6:51). The bread testified also to Israel’s constant dependence on God for all their needs, both spiritual and temporal (see Matt. 6:31-34). The table was always set, and its supply of bread renewed week by week. As the flame in the lamps on the candlestick rose heavenward, so the incense on the table of shewbread ascended as a sweet savor to the Giver of all good things.

It is but a short step from the table of the Lord in the sanctuary to the table of the Lord in the NT. The priests partook of the bread representative of Him who came down from heaven; we eat of the bread Christ says is His body (1 Cor. 11:24).