found that "six out of 10 Americans typically attend church". Countries that hold or have held a policy of state atheism have actively discouraged church attendance and church membership, often persecuting Christians who continued to worship. Theology The holding of church services pertains to the observance of the Lord's Day in Christianity. The Bible has a precedent for a pattern of morning and evening worship that has given rise to Sunday morning and Sunday evening services of worship held in the churches of many Christian denominations today, a "structure to help families sanctify the Lord’s Day." In and , "God commanded the daily offerings in the tabernacle to be made once in the morning and then again at twilight". In Psalm 92, which is a prayer concerning the observance of the Sabbath, the prophet David writes "It is good to give thanks to the Lord, to sing praises to your name, O Most High; to declare your steadfast love in the morning, and your faithfulness by night" (cf. ). Church father Eusebius of Caesarea thus declared: "For it is surely no small sign of God’s power that throughout the whole world in the churches of God at the morning rising of the sun and at the evening hours, hymns, praises, and truly divine delights are offered to God. God’s delights are indeed the hymns sent up everywhere on earth in his Church at the times of morning and evening." The early Christians attended two liturgies on the Lord's Day, worshipping communally in both a morning service and evening service, with the purpose of reading the Scriptures and celebrating the Eucharist. Throughout the rest of the week, Christians assembled at the church every day for morning prayer (which became known as lauds) and evening prayer (which became known as vespers), while praying at the other fixed prayer times privately; Christian monastics came to gather together to corporately pray all of the seven canonical hours communally. In addition to being based upon the spirit of the Ten Commandments (which includes the injunction to "Remember the sabbath day, to keep it holy"), the importance of church attendance in Christian theology is delineated in , which implores the believers: "Let us not neglect our church meetings, as some people do, but encourage and warn each other, especially now that the day of his coming back again is drawing near." Among Sunday Sabbatarians (First-day Sabbatarians),