Christ gave Himself “for us to redeem us from all lawlessness and to purify for himself a people for his own possession who are zealous for good works (Titus 2:14). As we who are in Christ are zealous for good, even the good of preparing to worship Him tomorrow, we rejoice that the goodness of our worship is owed to the purification Christ accomplished for us.
Our friend, John Owen, explains in Communion with God:
… the Lord Jesus having brought us into a condition of acceptance with God, wherein our obedience is well-pleasing to him, and we being to honour him as we honour the Father, that we have a respect and a peculiar regard to him in all our obedience. So Titus 2:14, he hath purchased us unto himself. And thus believers do in their obedience; they eye Jesus Christ,
… As him in, for, and by whom we have acceptance with God in our obedience. They know all their duties are weak, imperfect, not able to abide the presence of God; and therefore they look to Christ as him who bears the iniquity of their holy things, who adds incense to their prayers, gathers out all the weeds of their duties, and makes them acceptable to God.
All our holy things are tainted by our iniquities – but even this sin, the Lord has borne for us and purified by His obedience and redeeming sacrifice!
Irrespective of our feelings (or the tempo of the music!), our worship tomorrow will be good and holy, if we worship in Jesus Christ.