How Can You Know That The Person Sharing The Word of God is True Servant of God or Fake?

How Can You Know That The Person Sharing The Word of God is True Servant of God or Fake? Proverbs 11:24-25 There is one who scatters, yet increases more; And there is one who withholds more than is right, but it leads to poverty. The generous soul will be made rich, And he who waters will also be watered himself. 1 Timothy 5:18 For the Scripture says, “You shall not muzzle an ox while it treads out the grain,” and, “The laborer is worthy of his wages.” 2 Corinthians 9:6-7 But this I say: He who sows sparingly will also reap sparingly, and he who sows bountifully will also reap bountifully. So let each one give as he purposes in his heart, not grudgingly or of necessity; for God loves a cheerful giver. Luke 6:38 Give, and it will be given to you: good measure, pressed down, shaken together, and running over will be put into your bosom. For with the same measure that you use, it will be measured back to you.” Exodus 25:2 “Speak to the children of Israel, that they bring Me an offe