"For if the readiness is there, it is acceptable according to what a person has, not according to what he does not have. For I do not mean that others should be eased and you burdened, but that as a matter of fairness your abundance at the present time should supply their need, so that their abundance may supply your need, that there may be fairness."—2 Corinthians 8:12-14
You won't find tithing in the New Testament, either explicitly or implicitly. What's taught in the New Testament is fairness and sacrificial giving. Prosperity preachers promise big returns on your tithing investment, but the only one getting rich is them. Where's the fairness and equality? Why should they have a mansion and a private jet while many in their flock are living paycheck to paycheck and struggling to get by? They believe the preacher who keeps telling them: "Just keep tithing and eventually it'll pay off. You don't always see an immediate payoff. Just have faith."
We should give, but we should be careful. If a preacher says the word "tithe" I run the other way.