'Service' in the Bible

Food of all kinds is meant for the stomach, and the stomach is meant for food, and God will cause both of them to perish. Yet the body does not exist for the purpose of fornication, but for the Master's service, and the Master exists for the body;

I am saying this for your benefit, not to place a limitation on you, but so that without distraction you may give notable and constant service to the Lord.

yet *we* have but one God, the Father, who is the source of all things and for whose service we exist, and but one Lord, Jesus Christ, through whom we and all things exist.

And all [of them] were baptized into Moses [into his safekeeping as their leader] in the cloud and in the sea;

And there are [distinctive] varieties of ministries and service, but it is the same Lord [who is served].

And by God's appointment there are in the Church--first Apostles, secondly Prophets, thirdly teachers. Then come miraculous powers, and then ability to cure diseases or render loving service, or powers of organization, or varieties of the gift of 'tongues.'

Therefore, my beloved brothers and sisters, be steadfast, immovable, always excelling in the work of the Lord [always doing your best and doing more than is needed], being continually aware that your labor [even to the point of exhaustion] in the Lord is not futile nor wasted [it is never without purpose].

for a wide door for effective service has opened to me, and there are many adversaries.

But I beseech you, brethren, (ye know the house of Stephanas, that it is the first-fruits of Achaia, and they have devoted themselves to the saints for service,)