Why Give
As Christians, we give because of the grace that God has given us.  The Bible describes this 'grace giving' as being:

Generous (2 Corinthians 8:2)
Willful (2 Corinthians 8:3)
God-directed (2 Corinthians 8:5)
Shared (2 Corinthians 8:6)
Active (2 Corinthians 8:7)
Love Motivated (2 Corinthians 8:8)

The Bible gives us a baseline standard for giving: the tithe.  When we give the first 10% of our income to the Lord, we put God first in our lives.  Tithing is a tangible demonstration of our trust in Him and is an act of worship that expresses our gratitude and faith.  It is also an opportunity for us to play our part in the mission of loving God, loving people, and making disciples, however we are not under compulsion to give; rather, we should cheerfully offer what God has placed on our hearts (2 Corinthians 9:7).  We consider giving a form of worship to the Lord, which is why we receive these offerings during our Sunday services and online giving option.