Why We MUST Spend Time Together

Hebrews 10:25 says, "Let us not give up meeting together,  as some are in the habit of doing. . ."
Some take this out of its context and apply it to gathering for worship on Sundays, using it as leverage for requiring nothing less that consistent and regular worship attendance and rebuking those who fail to do so.  But this only part of a collection of verses which, when considered together, mean so much more than "let's be sure we all go to church on Sundays."
In the early part of Hebrews 10 Paul teaches us that because of Jesus and his sacrificial death on the cross for our sin, we have unobstructed access to God Himself.  In verse 19 he says that since that is true we have the opportunity and responsibility to act on that reality in several ways.  Each of those ways is introduced with 'let us'.  Verse 22 "let us draw near to God"; 23 "let us hold unswervingly to the hope we possess"; 24 "let us consider how we may spur one another on toward love and good deeds"; and 25, "Let us not give up meeting together. . .but let us encourage one another - and all the more as you see the Day approaching."
Whether it's meeting together on Sundays for worship, in a Bible study group at some one's home or over a cup of coffee at the local sidewalk bistro, we need to make getting together as followers of Jesus a priority.  It was a priority for him to make it possible for us to do so!
I MUST meet together with my brothers and sisters in the faith frequently because I need to be occasionally prodded (spurred on) and encouraged (reminded) to keep up the work of loving others and doing what God has created me to do. 
There's coming a day when you and I will give an account to the Lord for how we lived every day as disciples of Jesus; that day might be closer than we think.  When it comes 'let us' be able to say that we met often to encourage each other to live as Jesus calls us to live and then we went out to do just that.