Here are some ideas…
Go to church because it is advantageous to obey our Christian leaders:
Obey your leaders and submit to them; for they are keeping watch over your souls, as men who will have to give account. Let them do this joyfully, and not sadly, for that would be of no advantage to you. (Hebrews 14:17)
Go to church for the mutual Christian encouragement:
and let us consider how to stir up one another to love and good works, not neglecting to meet together, as is the habit of some, but encouraging one another, and all the more as you see the Day drawing near. (Hebrews 10:24-25)
Go to church because there are special promises associated with communal Christian prayer:
Again I say to you, if two of you agree on earth about anything they ask, it will be done for them by my Father in heaven. For where two or three are gathered in my name, there am I in the midst of them." (Matthew 18:18-19)
Go to church to hear the Sacred Scriptures publicly read and to receive public instruction from those ordained to preach and teach the Christian faith, pastors and teachers, who are God’s gift to his Church that we might avoid being “tossed to and fro and carried about with every wind of doctrine, by the cunning of men, by their craftiness in deceitful wiles” (Ephesians 4:11-14):
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Command and teach these things. Let no one despise your youth, but set the believers an example in speech and conduct, in love, in faith, in purity. Till I come, attend to the public reading of scripture, to preaching, to teaching. Do not neglect the gift you have, which was given you by prophetic utterance when the council of elders laid their hands upon you. Practice these duties, devote yourself to them, so that all may see your progress. Take heed to yourself and to your teaching; hold to that, for by so doing you will save both yourself and your hearers. (1 Timothy 4:11-16)
Go to church to participate in the body and blood of Christ that you might abide in him and he in you:
The cup of blessing which we bless, is it not a participation in the blood of Christ? The bread which we break, is it not a participation in the body of Christ? (1 Corinthians 10:16)
He who eats my flesh and drinks my blood abides in me, and I in him. (John 6:56)