When you volunteer to do a job
If that volunteer work
If that volunteer work is done as an obligation then odds are neither you nor the cause you’re contributing to are going to get anything positive out of it. The best volunteers are individuals who put their heart into something they believe in and do so for the pure joy of the experience. Such volunteers couldn’t care less if they get to bring a free t-shirt home for their efforts. All they care about is being of service to someone in need because it is in their nature to love thy neighbor as they love themselves. And no, doing voluntary work doesn’t mean it has to be a biblical experience. In some cases, people who volunteer for charities and events do so for all the wrong reasons as they seem to treat volunteer work as a bribe attempt to win over God. Among church-goers, if they understood their bible well enough they should know better that God pays more attention to what’s in the heart than the good works people do for whatever reason they use as an excuse to do it.