I understand the commandment (principle & purpose) of tithing to the Levitical priesthood as defined in OT passages such as Leviticus 27, Numbers 18, etc.
But, my question is now (present day), when there is no temple or clear lineage of the sons of Aaron, what biblical proof texts do Christian (mostly Gentile) pastors use to claim that modern-day believers are commanded to tithe to them (namely, their non-profit organization) as obedience to God?