A tithe is literally a "tenth part". Tithing is an issue of obedience,
commitment, and blessing opportunity.( Mal. 3:10) Through the tithe God has provided a method for all His children to give equitably. Whether you make a lot of money or little, your tithe is 10% and is honored equally in the sight of God. We are to offer back to God what He requires of us before we pay or give to anything or anyone else (Proverbs 3:9-10; Gen 14:18-20; 28:20-22)
An offering is a sacrificial contribution; a demonstration of your love for God for His goodness shown towards you, for God loves a cheerful giver. (II Corinthians 9:7)
Luke 6:38 " Give, and it will be given to you. Good measure, pressed down, shaken together, running over, will be put into your lap. For with the measure you use it will be measured back to you."