Right worship is always, and must be, the only basis for right giving and right learning and right service. Giving that is generous but done apart from a loving relationship with God is empty giving. Learning that is orthodox and biblical but is learned apart from knowing and depending on the Source of truth, is empty knowledge, like that of the chief priests and scribes. Service that is demanding and sacrificial but done in the power of the flesh or for the praise of men is empty service.
Throughout history gold has been considered the most precious of metals and the universal symbol of material value and wealth. It was used extensively in the construction of the Temple (see 1 Kings 6--7, 9; 2 Chron. 2--4). It was also a symbol of nobility and royalty (see Gen. 41:4; 1 Kings 10:1--13; etc.). Matthew continually presents Christ as the King, and here we see the King of the Jews, the King of kings, appropriately being presented with royal gifts of gold.
The Savior of the world is also the true King of the world, and He will not be Savior of those who will not accept Him as sovereign Lord. As wonderful as Jesus' saviorhood was to them, the early Christians' first known creed was "Jesus is Lord," acknowledging His rule.