What is the background of the verse Heb 10:25 Let us not give up meeting together, as some are in the habit of doing, but let us encourage one another—and all the more as you see the Day approaching. 


Hebrews 10:25

What would be the reasons to give up meeting? And a sub question, How can we motivate others for Sunday worship for denominations which have Sunday worship?
Why did the author make this statement? By reading before and after this verse, we can get an idea of his mindset when he wrote it. 

The beginning of the chapter tells us that the worshipers in the OT had to keep sacrificing animals every year, having no consciousness that their sins were forgiven. But we may come to church with the sense that the blood cleanses us from all sins. Perhaps some were staying away because they felt too sinful to come. 

v14 tells us that we have been perfected forever, especially those who are being sanctified, who have set themselves apart for Christ's purposes. Perhaps some are staying away from church because they are filled with their own purposes. By participating in church activities, we'll find Christ's church-building purposes fulfilled through us. 

in v26-ff, we find that we can be deceived by sin and stay away from church, and forget that we were cleansed from sin, and therefore set ourselves up for an awful judgment. The church is a place to hear the preaching of the Word, which can point out our sins and keep us repenting of sins. Perhaps some Hebrews could have been recovered from their sin if they had continued. 

These are several situations the author may have had in mind when he wrote the passage; he encouraged the Hebrews to continue attending and strengthening other believers while there.