The worship and divine service of the Gospel is to receive gifts from God...

But because Christ's righteousness is given to us through faith, faith is righteousness credited to us.  In other words, it is that by which we are made acceptable to God on account of the credit and ordinance of God, as Paul says, "Faith is counted as righteousness" (Romans 4:3,5).  Although, because certain hard-to-please people, we must say technically:  Faith is truly righteousness, because it is obedience to the Gospel.  For it is clear that obedience to the command of a superior is truly a kind of distributive justice.  This obedience to the Gospel is credited for righteousness. So, only become of this--because we grasp Christ as the Atoning Sacrifice--are good works, or obedience to the Law, pleasing.  We do not satisfy the Law, but for Christ's sake this is forgiven us, as Paul says, "There is therefore now no condemnation for those who are in Christ Jesus" (Romans 8:1). This faith gives God the honor, give God that which is His own.  By receiving the promises of God, it obeys Him.  Just as Paul also says, "No distrust made him waver concerning the promise of God, but he grew strong in his faith as he gave glory to God" (Romans 4:20).  So the worship and divine service of the Gospel is to receive gifts from God.  On the contrary, the worship of the Law is to offer and present our gifts to God.  However, we can offer nothing to God unless we have first been reconciled and born again. This passage, too, brings the greatest comfort, as the chief worship of the Gospel is to desire to receive the forgiveness of sins, grace, and righteousness.
~BOC, AP, V (III), 186-189