What we do with our bodies always communicates something, and so our body language in worship matters a great deal. Even the word that we translate as worship in scripture really means to prostrate or bow down, and this is an essential posture toward God that we need to recover. Similarly, men should be lifting their hands in prayer.
In the same way, our singing matters also. It is through music that our speech to God is glorified, beautified, elevated, emphasized, made weightier and more solid, and stirs us up to the highest degree. We should therefore earnestly sing to the best of our abilities, accompany our singing with the most fitting instruments possible, and desire to grow a culture of musical excellence.
How should we worship? Part 5: body language & song