I Peter 4:10 “As each one has received a special gift, employ it in serving one another, as good stewards of the manifold grace of God.”
The word ‘gift’ is the word Charisma (SEC 5486), which is an extension of Charis, or grace. (The word special, before it, was added by the translators.)
Psalm 110:3 “Your people will volunteer freely in the day of Your power.”
The word/phrase ‘volunteer freely’ is the word Nadab (SEC 5071), which means: a freewill offering, denoting an uncompelled and free movement of the will unto divine service or sacrifice. Among other places, it occurs in the building and rebuilding of the Temple (I Chron. 29:5, II Chron. 35:8, Ezra 1:6) It shows abundant and voluntary giving and sacrifice from God’s people.
Putting these two passages together (I Peter 4:10 and Ps. 110:3), it is evident that Psalm 110 is a prophetic utterance regarding the age of grace, as grace is an exhibition of God’s power: “…in the day of Your power”. It is referring to the Church age, as God’s Spirit has been poured out upon all flesh. (Joel 2:28; Acts 2:17) In the building of His Church, as the building and rebuilding the Old Testament Temple foreshadowed, His Spirit moves through His children in various manifestations of His power. His grace is given as a free gift to each person, flowing through each person, to the building up of His Church.
This exhibition of God’s power is seen through the free and uncompelled choice of His people to voluntarily give and serve.
The grace of God is the power of God, which has been released now in the age of the Church. As God’s people respond to His gift of grace, being motivated by His Spirit, they will give and sacrifice towards the building up of His Kingdom. The process is simple: God gives (grace, Charis) to people, then people give (Charisma) to others.
Conclusion: When people volunteer their time, money and abilities at church, they are fulfilling and validating the prophetic utterance made in Psalm 110, making it evident that we truly are living in the ‘day of His power’. Through the responsive giving of His children, God’s grace and power now flows into the earth.