Deuteronomy 16:17

every man shall give as he is able, as much as he finds that he can possibly afford to give, according to the blessing of the Lord, thy God, which He hath given thee, in the form of voluntary offerings. Three points deserve to be noted here, namely, that all men appeared at these great festivals, and that they did not leave their families at home if they could arrange to bring them along, that the rejoicing was over the wonderful deeds of the Lord, and that they brought voluntary gifts, as the Lord had prospered them. These three points deserve to be kept in mind by all Christians.