If you do not have enough money to give during weekly Church Service, then give at least 10 cents. Everyone can afford 10 cents. Because if you give 10 cents, God will multiply that 10 cents offerings & give you earn 1000 times more = $100. But if you do not even give a cent, then God is unable to multiply your income, you will be forever poor.
Luke 21: 1-4: As he (Jesus Christ) looked up, Jesus saw the rich putting their gifts into the temple treasury. He also saw a poor window put in two very small copper coins (10 cents coins). "I tell you the truth," he said, "this poor widow has put in more than others. All these people gave their gifts out of their wealth; but she out of her poverty put in all she had to live on.
If you are poor, copper coins (10 cents) are very huge. So according to Jesus Christ, do not look down copper coins (10 cents) donation.
In Holy Bible, it is recorded Christians are expected to give 10% of their income to God. 10% of income = is called Tithes. (*Note: 10% of income, not 10% of leftover profit after expenses. Also, 10% in increase of value, like selling shares, house or car.) (Less than that is stealing from God. A Christian Financial Consultant recommended the formula 10-10-80 = you give 10% tithes first + save 10% second + spend finish the rest of 80%.) (I try to give 10% of free gifts value. Totally not enough money to give. What about free sunlight, free air etc. Therefore, I think 10% Tithes are 10% of money income. Hope Jesus Christ God is able to understand that it is impossible to give 10% of free gifts value.)