Galatians 6:6
The one who is taught the word [of God] is to share all good things with his teacher [contributing to his spiritual and material support].
Matthew 10:10
Romans 15:27
They were pleased to do it, and they are indebted to them. For if the Gentiles have come to share in their spiritual things, then they are indebted to serve them also in [tangible] material things.
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].
Deuteronomy 12:19
Be careful that you do not neglect the Levite [who serves God]
1 Corinthians 9:9-14
For it is written in the Law of Moses, “You shall not muzzle an ox while it is treading out the grain [to keep it from eating the grain].” Is it [only] for oxen that God cares?