There are four overarching aspects of Christianity: surrender, submission, adornment of the Gospel, service.
1/ Surrender to Christ results in repentance and obedience to the terms of salvation (Acts 2:38).
Surrender is when a person yields to Christ wholeheartedly and becomes willing to follow Him no matter where the course may lead. There is no decision in life that is more profound than this one. It may be accompanied by great personal struggle because of the perceived dramatic effect it will have on present and future lifestyle.
2/ Submission to Christ results in holiness (Hebrews 12:14).
Submission is separation to Christ. It is becoming His disciple and taking on His discipline. It is doing the things associated with Christian living contained in the New Testament. Submission is another way to express sanctification but I think it expresses it in a more pro-active way.
3/ Adorning the doctrine of Christ (Titus 2:10)
Adorning the doctrine of God is making Christianity attractive to others. Holiness (Point #2) is a negative purity. We shun sin. We don’t do wrong things. We shun the very appearance of evil. That in itself may not be impressive or attractive to sinners. Adorning the doctrine is bearing fruit and showing a positive purity. It is not just refraining from bad things; it is doing good things and, thus, is a positive advertisement for Christ and Christianity. It is the living expression of a soul filled with the joy of salvation (Isaiah 12). In the context of adorning the doctrine, Paul used the example of employees pleasing their employers well (Titus 2:9). Christians should be such good employees that employers would prefer hiring them. That would adorn the doctrine of God.
We adorn the Gospel when we treat Christ and His Church as special, such as beautifying His house of worship and dressing our best when we present ourselves for worship. We, thus, advertise that God is real to us and the most important thing in our lives.
Adorning Christianity with our positive lifestyle creates identity and respect for us as Christians, just as the uniform of a policeman or nurse does in society. And it promotes interest in Christ on the part of others. It is awesome that God enables us as His peculiar people to glorify Him in this practical way.
4/ Service
Service involves things that promote, or are conducive to, evangelism and Christian edification. Every Christian delights in being used of God because we all want to expand God’s Kingdom and bring glory to His name. The first Christians even rejoiced when they were counted worthy to suffer for the name of Jesus (Acts 5:41). We each have something useful to offer Christ, just as the boy who gave his lunch, by which Christ fed the multitude (John 6:9-10). And there is tremendous joy from such use just as that boy must have experienced on that remarkable day.
And there is future reward for service. Jesus, Who said more than anyone else about future rewards, promised that doing something so small as giving a child a cup of cold water would be accompanied by reward (Matthew 10:42).
Conclusion
Christianity is an exciting, full-orbed, lifelong experience of faith (2Corinthians 5:7). And the best is yet to come. We will soon be called to meet Him in the clouds at the Rapture of the Church (1Thessalonians 4:16-17) and go from there to live with Him forever in the Holy City. What began as surrender concludes with eternal joy in the presence of Jesus Christ.