Read Leviticus 1-3.
John Phillips, a teacher for Moody Bible Institute, wrote a wonderful introduction to this book:
"Leviticus is a legal document, and most of us shun it for that reason. But we should not neglect a Bible book simply because its phrases are difficult and its concepts obscure. Leviticus is also a book of worship. The key is in the first verse: 'And God called unto Moses and spake unto him out of the tabernacle.' No other book in the Bible contains so many actual words of God. Eighty-three statements refer to the fact that God is speaking. That alone should draw us to this book."
The instructions begin in chapters 1-3 with regulations for 5 different voluntary offerings. These were offered by those who love God and out of gratitude, and according to one's ability, presented what they could. Repeatedly, we are told that the aroma of such sacrificial gifts were pleasing to God.
Question of the day: When was the last time you gave a gift of gratitude to God just because you love Him? This is generosity giving, over and above the responsibility of tithing.
The old hymn encourages us-
"Count your many blessings-name them one by one,
Count your many blessings-ev'ry doubt will fly,
Count your many blessings-money cannot buy,
Count your blessings-name them one by one;
Count your blessings-see what God has done."
After some quiet reflection of all God has done for you-spiritually, family, materially, etc., why not ask Him what He would like for you to give in return this week?
"Therefore, as you received Christ Jesus the Lord, so walk in him, rooted and built up in him and established in the faith, just as you were taught, abounding in thanksgiving." (Colossians 2:7)