What is the "universal call to holiness"?

Vatican II states in Paragraphs 39-42 of  LUMEN GENTIUM, that all members of the Church are called to holiness.  In other words, we are ALL called to be great saints!  

The Bible even mentions the importance of holiness. Here are some examples from Scripture:

With these scriptural examples, we can see the importance of being holy. To understand the importance of receiving the Eucharist in a state of grace, read the following:

Finally, we need to remember to go to frequent Confession, so that we may always faithfully live out the universal call to holiness. For information about the Sacrament of Penance and Reconciliation; and to learn how to properly confess your sins to Jesus in the priesthood, check out the following: