1 Timothy 5:17-18

The elders who perform their leadership duties well are to be considered worthy of double honor (financial support), especially those who work hard at preaching and teaching [the word of God concerning eternal salvation through Christ]. For the Scripture says, “YOU SHALL NOT MUZZLE THE OX WHILE IT IS TREADING OUT THE GRAIN [to keep it from eating],” and, “The worker is worthy of his wages [he deserves fair compensation].” [Deut 25:4; Luke 10:7]