Charles Spurgeon Commentary Numbers 4:7

"And upon the table of showbread they shall spread a cloth of blue, and put thereon the dishes, and the spoons, and the bowls and the cups wherewith to pour out; and the continual bread shall be thereon:" — Numbers 4:7 (ASV)

When they moved the sacred table, the bread was always there; twelve cakes for the twelve tribes, for the bread of God's house is never lacking.