God cares about true worship
Jesus said that the Father seeks worshippers who worship in spirit and in truth (John 4:23-24). That reaches deeper than instruments, volume, rhythm, or the year a song was written. Worship needs to be real, shaped by the truth of God, and directed towards him.
A modern melody can carry faithful words. An older hymn can be sung mechanically. Neither style guarantees a worshipful heart. The better question is, does this song help people see God clearly and respond to him with faith, gratitude, repentance, and praise?
But the hour cometh, and now is, when the true worshippers shall worship the Father in spirit and in truth: for the Father seeketh such to worship him.
Let the words carry biblical truth
Paul told the believers in Colossae to teach and admonish one another through psalms, hymns, and spiritual songs, singing with grace in their hearts to the Lord (Colossians 3:16). Church music is not only a private emotional moment. It also teaches the gathered people.
That gives a useful test for contemporary songs. Are the lyrics clear about God, Christ, grace, sin, the cross, resurrection, and hope? Do they reflect Scripture faithfully, or are they so vague that almost anyone could sing them? A simple song may be deeply biblical, while a musically impressive one may say very little.
Paul also connects singing with thankfulness and with speaking to one another as believers (Ephesians 5:19-20). Songs that the congregation can genuinely sing together often serve the church especially well.
Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord.
New songs have a place
The Psalms repeatedly invite God's people to sing a new song to the Lord (Psalm 96:1). God's people have always expressed enduring truth in fresh words and music. Newness itself is not a threat to reverence.
At the same time, new does not automatically mean helpful. A church can receive contemporary music thankfully without chasing every trend. It can also treasure hymns and older songs without assuming that age alone proves faithfulness. A healthy church may sing from more than one era because God's truth is bigger than any one musical culture.
O sing unto the Lord a new song: sing unto the Lord, all the earth.
Use freedom with love
Scripture gives a broad principle for choices that are not directly commanded or forbidden: do all to God's glory (1 Corinthians 10:31). Leaders and congregations can ask whether a song draws attention towards God or mainly towards performers, whether its presentation fits the purpose of gathered worship, and whether it builds up the people present.
Christians may reach different conclusions about particular styles, instruments, or production. In those differences, Paul urges believers to pursue what makes for peace and mutual edification (Romans 14:19). That means listening patiently to older members, younger members, musicians, and those who find certain styles distracting.
So, should contemporary Christian music be used in church services? It can be, wisely and prayerfully. Choose songs with sound doctrine, sing them as a congregation where possible, and hold the style with open hands. The goal is not to win a musical argument. It is to help the church glorify God together.
Whether therefore ye eat, or drink, or whatsoever ye do, do all to the glory of God.