John Wesley on Exodus 27:1

As God intended in the tabernacle to manifest his presence among his people, so there they were to pay their devotions to him; not in the tabernacle itself, into that only the priests entered as God's domestic servants, but in the court before the tabernacle, where, as common subjects they attended. There an altar was ordered so be set up, to which they must bring their sacrifices; and this altar was to sanctify their gifts; from hence they were to present their services to God, as from the mercy - seat he gave his oracles to them; and thus a communion was settled between God and Israel.